For whatever it's worth ...
If you saw the amount of stuff Mike has, you would *know* that what he is saying is 100% true . This isn't a matter of you getting milked another $50-$75 ... It's more than likely exactly what he's saying.
I can totally understand being torqued not getting that hard to find glass and thinking something shady was going on when you see it relisted ... However, if you saw all of the stuff, you'd have a better understanding as to how something went wrong .
Just talk to Mike about it ... I'm sure he'll take care of this for you.