take the traderconfig file and the types file sidebyside and look at the names of each type and copy them over to your trader config. just like SniperOptic is the same exact thing as a type in the types file. just gotta reverse engineer it. doesn't look pretty but this is what i came up with. prices are also just basic to see if it would work and it did. you can reorganize and even put them in their own categories. MoreGuns doesn't have to be the category each of these has to be in. just make sure you don't mess with the names at all, no spacings or anything. and the first number is obviously buy, second is sell.

should be simple enough. copy paste. but proper formatting is important, and copying this may not do the trick so to be thorough, try it out yourself by copying an item line in your own file and paste it 20 or so times and then replace the names with what you see here and make sure formatting is how it should be. replace prices as you see fit.

<Category> MoreGuns

SniperOptic, *, 100, 50
AWMreal, *, 100, 50
Mag_AWMreal_5Rnd, *, 100, 50
Kar98real, *, 100, 50
M1A, *, 100, 50
Mag_M14_20Rnd, *, 100, 50
Mag_M14_10Rnd, *, 100, 50
M1A_RailAtt, *, 100, 50
M16, *, 100, 50
Mk22, *, 100, 50
Mag_Mk22_14Rnd, *, 100, 50
MP7, *, 100, 50
Mag_MP7_40Rnd, *, 100, 50
Ammo_46x30, *, 100, 50
Ammobox_46x30_25Rnd, *, 100, 50
SCAR, *, 100, 50
StechkinAPS, *, 100, 50
Mag_APS_20Rnd, *, 100, 50
APS_Buttstock, *, 100, 50
VityazSN, *, 100, 50
Mag_Vityaz_30Rnd, *, 100, 50
AmmoBox_8mm_15rnd, *, 100, 50
Ammo_8mm, *, 100, 50
AmmoBox_338_15rnd, *, 100, 50
Ammo_338, *, 100, 50
M14, *, 100, 50
Kar98_Bayonet, *, 100, 50

Oh, thanks for the file and I generated them manually, in the same way thank you very much

Looks like newer ones are mising, here's an updated trader config (changes prices how you like)