Copying / Selling Spellbook for profit


Rules Questions


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I just wanted to confirm I get things right.
I have a 2nd level Abjurer in the game I’m DMing which is named Cath. Cath’s player is asking me if it is possible during downtime activities to make money out of her spellbook. Her spellbook currently have 13 0-level spells and 9 1st-level spells.

On http://paizo.com/pathfinderRPG/prd/magic.html, it says that “Captured spellbooks can be sold for an amount equal to half the cost of purchasing and inscribing the spells within.” It also says that the writing cost of 0-level and 1st level spells are respectively 5gp and 10 gp.
On http://paizo.com/pathfinderRPG/prd/magicItems/scrolls.html#scrolls, it says that the price of 0-level and 1st-level wizard scrolls are 12.5gp and 25gp. The spellbook itself is an adventure gear worth 15gp. For some reason though, it doesn’t specify that beside the spells within, you also selling the book itself at 50% (that would be 7.5gp).

So if she would sell her own spell book, she would sell it for : ((13*(5+12.5))+ (9*(10+25)))/2 = 271.25gp.
Of course, Cath is not stupid to sell her own spellbook. But she would love to make a copy of it and sold it after.
Copying a spell from a spellbook instead of a scroll means that Cath doesn’t need to actually buy the scroll. That would leave her with only paying for the writing cost (and a blank spellbook).

Rules also says : “Wizard can use the procedure for learning a spell to reconstruct a lost spellbook. If he already has a particular spell prepared, he can write it directly into a new book at the same cost required to write a spell into a spellbook. The process wipes the prepared spell from his mind, just as casting it would. If he does not have the spell prepared, he can prepare it from a borrowed spellbook and then write it into a new book.
Duplicating an existing spellbook uses the same procedure as replacing it, but the task is much easier. The time requirement and cost per page are halved.“

So she would only pay for half the price of writing. The writing cost of all her spells would be ((13*5)+(9*10))/2= 77.5 gp.
So if she pays 15 gp for a blank spellbook and copy all her spells into it for 77.5 gp, she would have a copy of her own spellbook that she could sell for 271.25gp, for a profit of 178.75 gp ? Writing spells takes 1 hour per page and 30 minutes for 0-level spells. Since she is duplicating an existing book, it also takes half the time. Ti time is then ((13*0.5)+(9x1))/2 = 7.75 hours, just a bit less than a “work day”.
So should her party decides to stay in town for a rest of one day, she could use that time to “work” and get 178.75gp profit in one day.
Do I get this alright??


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i'd say spellbooks fall under "treasure" for value that you get for finding them....

for anything that generates money see the Profession section under skills.
it takes forever to find a buyer, her profit equals her profession(scribe) skill roll.

Money is made adventuring, if you are spending your time scribing, congratulations, you just became an NPC that the party will hit up for scrolls later.


MC Templar wrote:

i'd say spellbooks fall under "treasure" for value that you get for finding them....

for anything that generates money see the Profession section under skills.
it takes forever to find a buyer, her profit equals her profession(scribe) skill roll.

Why would a spellbook X would worth more gold because it was found as part of a treasure rather than scribed if it is the exact same spellbook ?

MC Templar wrote:
Money is made adventuring, if you are spending your time scribing, congratulations, you just became an NPC that the party will hit up for scrolls later.

This is for a single day... your party has never taken single a day off ? Or any situation that a specific item is available in town and the party really want to buy but if few gold short ? I'm sure a reasonable party would agree to rest for a day in order to buy such desired item. I'm not sure why would finding a buyer would take so much time. Large city are full of magic shops.


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Wow, that math is pretty complex. I'm sure it's simpler than that.

Also, you assume the price to acquire the spell is based on scroll price, but it isn't. See below.

Finally, who's going to buy that book? A farmer? A town guard? A barkeep? A strumpet?

Nope, none of the above.

So then who?

A level 1 wizard? Maybe, but he starts with an identical book in his starting equipment package. His book has EVERY cantrip (no need to pay for them) and has 6-7 first level spells, probably duplicating some of the spells Cath is trying to sell. At best, he might consider buying that book to get her 9 level 1 spells (assuming he doesn't have any of them AND assuming he is interested in all NINE of her spells).

So, the buyer would only pay for the level 1 spells. At best.

Here are the relevant rules:

Pathfinder SRD, Magic wrote:
In most cases, wizards charge a fee for the privilege of copying spells from their spellbooks. This fee is usually equal to half the cost to write the spell into a spellbook (see Writing a New Spell into a Spellbook). Rare and unique spells might cost significantly more.
Pathfinder SRD, Magic wrote:

Table: Spell Level and Writing Costs

Spell Level..Writing Cost
0............5 gp
1............10 gp
Pathfinder SRD, Magic wrote:

Writing a New Spell into a Spellbook

Materials and Costs: The cost for writing a new spell into a spellbook depends on the level of the spell, as noted on Table: Spell Level and Writing Costs.

So the cost to write a level 1 spell into a spellbook is 10gp and the fee to acquire that spell is half that, for 5gp. Because Cath is copying from one spellbook to another, the cost per page is divided by 2, so the cost is 10/2=5gp. That will be her cost per first level spell.

To figure out the sale price, add that cost to the cost to learn the spell (5gp) and you get 10gp per spell. If she writes all 9 spells, that means the cost for "purchasing and inscribing the spells within" is a total of 90gp (not counting cantrips that nobody would ever want to purchase).

And because “Captured spellbooks can be sold for an amount equal to half the cost of purchasing and inscribing the spells within.”, Cath should be able to sell this spellbook for 45gp.

Note that it does NOT say it's also half of the price of the blank spellbook, so that's perhaps negotiable with the buyer (GM) - she might just get the flat 45gp for the book. If she's lucky, she'll get another 7.5gp for the actual book.

But it will still cost her 45gp to write those spells plus 15 gp for the blank spellbook, so her cost to produce this copied spellbook is 60gp. So the best outcome is that she pays 60gp and sells it for 52.5gp, for a loss of 7.5gp.

This is not likely to be a profitable venture for Cath.


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Bavollio Frallino wrote:
MC Templar wrote:

i'd say spellbooks fall under "treasure" for value that you get for finding them....

for anything that generates money see the Profession section under skills.
it takes forever to find a buyer, her profit equals her profession(scribe) skill roll.
Why would a spellbook X would worth more gold because it was found as part of a treasure rather than scribed if it is the exact same spellbook ?

Because the treasure you find is a game mechanic to support the "wealth by level" function to ensure player have access to the gear that they challenge rating system expects them to have so the game stays challenging but not impossible. The price is reflective of this

Bavollio Frallino wrote:
MC Templar wrote:
Money is made adventuring, if you are spending your time scribing, congratulations, you just became an NPC that the party will hit up for scrolls later.
This is for a single day... your party has never taken single a day off ? Or any situation that a specific item is available in town and the party really want to buy but if few gold short ? I'm sure a reasonable party would agree to rest for a day in order to buy such desired item. I'm not sure why would finding a buyer would take so much time. Large city are full of magic shops.

And magic shops aren't PCs. The rules for using your downtime to make money are the profession rules. Anything that creates a sudden windfall that breaks the wealth by level guidelines should be killed by the GM in it's infancy.

Just because you have something that you want to sell doesn't mean someone who wants to buy it appears out of the ether. The profession rules provide the abstraction of having to keep a shop open to provide access for buyers until the right one arrives.


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MC Templar wrote:
Because the treasure you find is a game mechanic to support the "wealth by level" function to ensure player have access to the gear that they challenge rating system expects them to have so the game stays challenging but not impossible. The price is reflective of this

Hmmmm. That's a very gamist viewpoint. A more simulationist viewpoint might be to say that a found spellbook with certain spells would sell for EXACTLY the same price that a copied spellbook with the same spells would sell for.

Any other gamist viewpoint, while valid as a WBL game mechanic, is extremely disruptive to roleplaying, immersion, and verisimilitude. Some players find those things to be more important than simple game mechanics. Which is not to say you're wrong, but it is to say that your response is very unsatisfying to a large number of players.


Thank you for the explanation DM_Blake. Your math is making the value of the spellbook Cath found in the AP right. My maths was giving another value. Thanks again.

MC Templar wrote:
Because the treasure you find is a game mechanic to support the "wealth by level" function to ensure player have access to the gear that they challenge rating system expects them to have so the game stays challenging but not impossible. The price is reflective of this

As DM_Blake point, following Wealth per level kills roleplaying (at least for me) and in the AP I'm playing, it's clearly not following that rule. But after DM_Blake's explanation, copying spellbook to sell it is a loss anyway. Thanks for the input though.


Sorry for necroing this thread but I am having problems too calculating the price of spellbooks.

In my opinion these are the prices. Please correct me if you think that I am wrong.

1-fee to pay to a wizard to have the permission to copy a spell from his spellbook: level^2 * 5gp. for cantrips 2.5gp each.
2-cost of COPYING A NEW spell that your wizard has not in his spellbook from the spellbook of another wizard: level^2 * 10gp. for cantrips 5gp each
3-cost of DUPLICATING AN EXISTING spell from your own spellbook to another spellbook: level^2 * 5gp. for cantrips 2.5gp each
4-price to sell spellbook: level^2 * 7.5. for cantrips 3.75gp each

On points 1 and 2 everyone seem to agree.

On point 3 and 4 I disagree with DM_Blake.

price of crafting and selling
I know that there is a general rule that you should be able to buy for full price, to fabricate for half of the price and to sell for half of the price, but I'm not sure it applies for DUPLICATED spellbook. It surely works for COPIED spellbooks.

In the case of copied spellbook to copy a spell you have to pay level^2*15gp. You can sell the book for level^2*7.5gp. It's the exact half.

Duplicated spellbooks and spellbooks copied from other wizards should have a different price if I follow DM_Black reasoning and this general rule, even if they contain the exact same spells, I think that's unreasonable.

Duplicating a spellbook is a way to have a cheap backup, so I think that it doesn't follow the general rule of item crafting, thus letting players to make a profit.

This means that, if you duplicate a spellbook and sell it, your profit is half of the fee that mages pay to copy your spells. Usually this fee is level^2*5gp, selling a duplicated book you can earn level^2*2.5gp. This is because you can "craft" it for half of the price and sell it for half of the price + half of the fee that mages ask to copy it. So your profit is this half fee.

So selling a duplicated book is like renting it to other wizards and letting them copy the spells for half of the fee price normally paid. It also takes half of the time to DUPLICATE instead of COPYING. So, if you spend a certain amount of time duplicating a spell or if you spend the exact amount of time letting a wizards copying your spell for a fee, you make exactly the same profit.

Cath example
Cath is DUPLICATING her spellbook, so she doesn't have to pay the fee to a mage to copy his spellbook and she can pay half of the cost to transcribe spells, so she has to pay level^2*5gp for normal spells and cantrips*2.5gp. So the cost of duplicating her spellbook is (13*5gp + 9*10gp)/2 = 77.5gp

The price of selling is the fee to pay to the mage (level^2*5gp) + the writing cost (level^2*10gp) and then halving the sum. it's level^2*7.5gp for normal spells and 3.75gp for cantrips. So the price of selling her spellbook is 13*3.75gp + 9*7.5gp = 116.25gp

She can sell her spellbook for a profit of 116.25gp - 77.5gp = 38.75gp

profits
cantrip profit: 1.25gp time: 15 minutes
level 1 profit: 1*1*2.5gp = 2.5gp time: 0.5 hour
level 2 profit: 2*2*2.5gp = 10gp time: 1 hour
level 3 profit: 3*3*2.5gp = 22.5gp time: 1.5 hours
level 4 profit: 4*4*2.5gp = 40gp time: 2 hours
level 5 profit: 5*5*2.5gp = 62.5gp time: 2.5 hours
level 6 profit: 6*6*2.5gp = 90gp time: 3 hours
level 7 profit: 7*7*2.5gp = 122.5gp time: 3.5 hours
level 8 profit: 8*8*2.5gp = 160gp time: 4 hours
level 9 profit: 9*9*2.5gp = 202.5gp time: 4.5 hours

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