I've owned several Winchester 100s and still have 3, 2x308 and 1x243. One of the 308s has been used to kill hundreds of deer in deer reduction shoots, using whatever brand of Fed/Rem/Win 150 grain factory ammo was the least expensive at the time.
The only two problems that I've ever had with Winchester 100s were feeding issues with 284s, they can be VERY magazine sensitive, and broken extractors. I keep three or four extractors, extractor springs, and extractor plungers in the parts drawer just to be on the safe side.
I wouldn't pay more than $500 for a minty Winchester 100 in either 243 or 308. The selling prices on GB are probably a gauge on what they are typically going for.
