I have a VB Gamecock 20 gauge double trigger extractor with 25" barrels that I've owned since 1977. For a time, it was my only shotgun and so shot skeet, doves and even hunted deer with slugs (not successfully performing as a slug gun, I'll add, but it was all I had at the time and the location required shotguns with slugs, so...). I had my best day ever on a dove field with it, killing 11 birds with 13 shells.
It mostly sits in the back of the vault now, as I've acquired a number of target shotguns, a couple of hammer guns and some pre-1900 guns for use in the field. I find it hard to shoot these days, as it's very light and short and I tend to stop swinging the gun. I'm sure I could correct that flaw if I shot it regularly, but for now it sleeps awaiting a grandchild (in some indefinite future time) to whom it will introduce the joys of side by side shotgunning.
In terms of pricing, I've seen 12 gauge Gamecocks similar to mine with asking prices in the $800-900 range and 20 gauge guns at $1000-1100. I don't know what they actually sell for, but if you could get a 20 for under $1000 I'd say you did well.