It really depends on what type of glue was used. some, like hot glue or elmers, will clean off the chip easily. Other glues however, like epoxy, will be nearly impossible to remove from the chip without damage. in this case the seller wasn't sure what kind of glue was used.

I estimate the real world value (if each were sold by itself on ebay) of the chips to be around $1200 (if they weren't damaged).....book price would be a bit more.

I woulda bid but I'm a bit on the broke side.