You know the old saying "When it sounds too good to be true, it probably isn't." I sincerely believe this was the case here as well. One of the things that should have been a dead tip-off was the serial number. Every manufacturer has a specific coded serial number that identifies their product. The manufacturer is usually more than happy to let you know the history of that serial number or whether or not it is bogas.
good Luck,
Gary
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!
K+E=W (Knowledge Plus Experience = Wisdom.)