It makes too much sense, the only people that might sell them for less are the people that bought them new for, say $650. The others sell them at such high prices because they paid more when they got them new...and they don't want to loose money on it when they sell it.
owell to bad thats the way the game played untill the prices go up there stuck with the glock they paid $750 for no one going to pay that for USED glock when you can get NEW one for $649.99