For the OP - It is OK to make money flipping a bass. But I have to say your OP read like you were the original consigner and have a solid background of this bass. The fact that you got it for $100 should indicate SOMETHING to you about it's value. Any pawn shop worth it's salt would have already done a google search on it to see if it is worth anything. They paid someone else $50 I'd bet. So there is the historical value.