Posted By:
RichardI have found that Boston Store backed e135s sell for slightly more than Collins McCarthy, although Collins are very slightly tougher to find. I think this is due to the Boston Store back being a little more "glamourous". Then there is a huge jump in scarcity to the next two backs which are SB and Weil.
Rankings from easiest to toughest:
Boston Store
Collins Mccarthy
(big gap)
Standard Biscuit
Weil
Blank (if you consider it a back)