Start-up advice for Collector Class

[BigP4nda]

I have been getting the idea for a new class called Collector, as the name suggests: It is a class that specializes in summing the value of items. An excellent appraiser and marketer.
I can come up with most of the abilities myself, but what I am having trouble with is a way to implement this style of character into combat. I don't know whether it should be support or not, but either way how would I use this kind of skill set to aid other PCs in combat.
Perhaps something like using the Appraise skill in place of knowledge for determining weaknesses?
Or should I not even bother worrying about its usefulness in combat and focus on its abilities in the social aspect?

[Claxon]

If the focus is on money, marketing, and appraising...without rewriting the pathfinder system it just sounds like your talking about someone with ranks in appraise, bluff, and diplomacy.

It sounds like you want a bard. A bard who gets some bonus to money related stuff.

Or possibly an Abadarian Cleric.

I'm not sure this really needs to be it's own class. At most this sounds like a bard archetype to me.

[BigP4nda]

Well I was wanting something even more focused on it. Basically someone who collects things along his adventure, sells and trades. And was trying to come up with class features that would utilize this in a form to make a class out of it.
Basically I want to make a class that is derived from the Appraise skill, not just pick any class and put ranks into Appraise.

[BigP4nda]

I was thinking about giving it improvised combat abilities, Maybe a way to give the class an interdimensional storage without blatantly giving them a bag of holding so that people don't dip a level into it for a free one. Maybe something level-dependent.

[Claxon]

Why not give them an ability that lets them carry an amount of weight using their charisma modifier as their strength modifier?

I still don't know how you would be a class completely around the concept of appraise. As it exist, the skill is not very worthwhile. I'm not sure why you want rewrite the system to make something so focused on a single skill.

To be fair, there aren't any classes that are focused onto a single skill so much, though there are classes that do get bonus to certain skills and things related to them.

Bards are good at diplomacy and bluff because of spells, Druids and Rangers are good at tracking because of class abilities and spells, etc.

But none of those classes are lazer focused around a single skill.

[BigP4nda]

Well yea, poor explanation. I do like the idea of the carry weight. Obviously he would have something adding half his level to appraise, and maybe diplomacy.
Perhaps a detect magic at will like the detect evil that paladins get. I don't really want to give them spell-casting if I can avoid it.

[Claxon]

This sort of thing seems perfectly tuned for spell casting though.

Especially like teleportation back to specific cities and markets.

Perhaps they get at will Identify.

[BigP4nda]

Ooh i actually like that. Hmm