Quote Originally Posted by sanahtlig View Post
As I recall, the exchange shop SRs can't be max limit breaked.
Weapons can, Eidolons can't.

There is a rumor that they drop from their respective bosses as a low drop which would allow you to LMB them but... if that rumor is true, then the droprate is so abyssmal you shouldn't even think about LMBing the Shop Eidolons.