Well I didn't check that out in season 3. But in this season 4 I was doing a lot of scavenging and I got Gunsmith Big Guns 1, and 2 I set a tent middle of Klamath and Den. After that I started selling crafted M60 to Flick in Den as he was paying best. 1590 caps per one m60. But after I was selling him some crafted M60's I started that his buying offer raised from 1590 caps to 1620 caps. And after selling him even more M60's his buying offer raised from 1620 to 1650. This was reached without any Charisma rising or any barter skill risising by up a point. My Barter is only 4%. My Character player stats didnt change ST 6 ,PE 8 ,EN 8 ,CH 1, IN 6, AG 8, LK 3 and that rise of price to sell? Nice
Maybe this "price selling upgrade" is noticible from other m60 well buyers, one I know of is in Broken Hills, I will check him out if his price for selling m60 changes on higher