I found strange effect on some items, especially weapons - custom and original: some of them are at higher price despite that i lowered their base value. For example i lowered price for RCW Laser and finally a vendor in Novac wants to buy it at higher price than its base value at less than 50% condition. These are going only to some items, most of them are revided correctly. Does anyone know what's up?

PS. No special perks, barter skill at 21 pts.