where to access the item type in pricelist and paint data of buy order in classified?

[GunnerCat]

Hi, im currently working on my own project that are related to bp.tf price grid/pricelist, and there are a couple of questions that i cant seems to find an answer
Firstly, is it possible for me to only show weapons from price grid/pricelist?
secondly, i tried to find an information about an item at buy order that doesn't have certain parameter, for example paints, but i could figure it out where that information is, is there any way to access it?
Thanks a bunch