since iam trader a bit, i ll tell you what prices i would sell for.
Drugs:Mentat 150, Buffout 200 , jet 200, psycho 700 , ss 160, nuka 25 , cigs 25, beer 15
Armors(armor+helmet): CAMKII 2000+500 ,CA 1500+300, MAMKII 900+200, TA 900+300, LAMKII 500+150
SG: assault 200, pancor 400, p90 1200,gauss 15000
BG: avenger 1500(3000*),RL 700, M60 700
EW: gatling 3500(6000*), plasma r 1000, laser r 900
Ammo: MFC 3,5, 5mm ap 2, 5mm jhp 1,5, shell 2, 7.62 3, 2mm 150
Resources: MP 20, GP 10, alloy 45, epart 20, chem 35, junk 30,fiber 10, HQ fiber 500, HQ MP 80, HQ alloy 100, HQ GP 80, gg pelt 55,hide 90, det part 600,
Misc: motion sensor 3000, stealthboy 3000, advanced lockpicks 500, dynamite 1200, C4 1500
i think this list is quite complete if you think i have no idea about price of any good maybe you are wrong