Recently I was offered to trade my Gretsch Streamliner (No Bigsby) for an Ibanez Montage MSC650 and a Shure 55sh.

The Montage is a bit hard to get a definite price point on. They seem to sell from 4-500 on ebay to nearly 1k on reverb. The mic on the other hand seems to MSRP for over 200$.

I'd mainly be interested in flipping this gear he's offering (looking for a Gretsch New Yorker for my next electric); does this seem like I'd be getting the better end of the stick?