Or at least don't call in a huff, keep yer cool. I know of someone that actually went to a bike chop shop up in Laramie, who had thier ride stolen down here in FOCO. He saw all kinds of bike parts, when he was invited by someone to look at a bike he was "wanting" to buy from the place. He was soooo fired-up apparently seconds away from throttling the guy, he kept his cool, came back down to the police station told them everything, they coordinated with Laramie police and went up there, where a altercation ensued and the 6'6" brickhouse cop crumpled some fool trying to get in his face about the stolen bike(s). He returned to FOCO with the guys bike mostly intact, and a bike chop shop shut down.
That being said, because they cretens chop (part out) the bikes, I would also look for the bling parts individually, or at least as part of the "package" they are trying to sell.
Sucks I know, I had a $4500 totally tricked out Rocky Mountain stolen from me in a place that was very very very conspicuous (very very public), on a bomber bike rack, for one hour, and with 2 bomber locks. Gone, everything gone. That was 9 years ago, and I still see ghosts of that bike when someone is riding a tricked out bike down the street