Look at it this way, inherent bonuses don't stack. That's the easiest way I found to understand how it works. Although, I really don't think it's all that unbalancing to let them in this regard.
^ What they said. In my home games, I let the Tomes stack. The prices work out (though it is technically easier to get 5 +1 Tomes than it is to get 1 +5 Tome). I think it leads to less waste and more player enjoyment.
Regardless, how the rules actually work is different. Reading a +1 then a +3 Tome results in a +3 bonus because they don't stack.
It's probably worth noting that by the rules, if you're casting Wish directly for the stat increases, to get the full +5 you need to cast Wish 5 consecutive times. Even a single round between casts breaks the chain and prevents the full bonus.
The tomes already make it way easier to get stacked bonuses than making sure you have 5 9th level spell slots to cast Wish from, plus the material components for all of them.
Damn you sweating to the oldies for not stacking with p 90 X...
^ What they said. In my home games, I let the Tomes stack. The prices work out (though it is technically easier to get 5 +1 Tomes than it is to get 1 +5 Tome).
That is how we do it in our games as well and since the GM can control availability of tomes in home games balance usually is not an issue if they do it smart.
They have the 25000 x enhancement material component of Wish added in. These things are just a specialized Wish in book form. The book is cheap, the Wish is regular price.
Except, of course, you can't make a 9th-level spell into a potion. A scroll, you could. A wizard scroll of wish would cost 3,825gp + 25,000gp = 28,825gp, or slightly more than the proper tome.
Aren't the tomes expended once used? Sure you can upgrade it if you do so prior to reading it, but you can't make a nonmagical book more magical without basically starting from scratch.
The alternative is to assume that the magic in the tome is not expended, and so one book could buff the entire party! *bites nails nervously*
EDIT: Which is clearly not allowed according to the item description.
Tomes as treasure are really dumb. Either you crafted it yourself and used it immediately, or you crafted it for a paying customer and they used it immediately. No one would spend that much money and time just to have one sitting around in case they met someone they wanted to give a permanent (extremely expensive) bonus to.
Tomes as treasure are really dumb. Either you crafted it yourself and used it immediately, or you crafted it for a paying customer and they used it immediately. No one would spend that much money and time just to have one sitting around in case they met someone they wanted to give a permanent (extremely expensive) bonus to.
Maybe something happened to the reader (killed, kidnapped, etc.) or to the tome (stolen, lost, etc.) before they could finish reading it?