There used to be a lot of treasure map groups in PF though I been seeing a lot less recently.
Just a note that most of the crafting materials will be randomly distributed - shards/cloths/ingots/dress materials.
Some exceptions being frosted glass lens, chinchilla hides and a few others that will end up in treasure pool to be rolled on.

As for selling service, this is in the grey area, technically you are not looking for party and doing something that SE does not really encourage... You can probably do it but may/may not get nasty tells.