I'm sure we all have stories of the cheap and good and also ones that we let get away. Was at an auction a few years ago and bought a L.C. Smith Specialty grade 16 gauge for $1,500. Turned out the barrels were cut (I was more stupid then), but I still sold it for more then what I paid.
However, that same day I watched two Sterlingworths head out the door that I wanted, but I was holding out for the LC. One SW (a pin gun) went out the door at $800. The other (a 16 gauge with 30" tubes) went out the door also at $800. Both guns were subsequently sold on Gunbroker and a substantial profit was realized by the fellow who bought both at the auction.
That particular auction had loads of Winchester rifles (pre-64) and as such most of the doubles there were pretty much ignored b most.