COuld it have been a screwup at Musician's Friend?
Four years ago I was shopping for a new monitor and looking for proces on these ViewSonic PS790 19" monitors. Buy.com had it for way lower than anyone else, like $100 less or so, so I ordered one. A day later the price was back in line with everyone else. No sale ort anything going on, somebody must have fat-fingered something in data entry and later, somebody caught it, and I happened to luck out and stumble on it during the right time frame...