the thing is, almost every cab like this, from this era, contains Utah speakers. So basically what I'm saying is a: these dudes put no effort into appraising the actual value of the cab and b: that cab listed on the Guitar Center website probably has the exact same speakers in it, and if it doesn't they certainly aren't saying it. Again, I spent a while looking into the prices these cabs get before I tried to sell mine and I checked every inch of my particular cab so that I knew its exact condition and could make a decent estimate of its value against other prices I saw online (my only available resource), and then decided on an asking price at the low/just below end of the spectrum. I didn't go into it blind, I'm annoyed because the Guitar Center guys were either trying to play me off for a chump, or they just didn't give enough of a fuck to actually check the damn thing out in any depth.
As a Guitar Center employee, I can add a bit of insight. It is policy to not offer any quote until Vintage gets photos, and trust me, Vintage varies from day to day on whether or not they get you a good price. I've seen them offer a guy 400 for a JCM 800, and I was the one who had to talk him down when he got offended as he should have. On a side note, Fender did make some 2x12s that are as big as a 4x12 in a silver face like that. I'm sorry the guys made you feel cheated. It pisses me off to know end when there are assholes in other stores because it makes the rest of us look like jerks.