GPK OS2 should be treated as 3 different sets for pricing purposes:

*Messy Tessie Matte Back set (86 cards): contains 2 back variations for #42a/b. This set is significantly more valuable than the other two.
*Messy Tessie Glossy Back set (91 cards): contains 2 back variations for #42a/b, 4 checklist variations for #46a/b and #47a/b, and 1 name change variations for Schizo Fran and Fran Fran. This set is slightly more valuable than the last one.
*Live Mike Glossy Back set (91 cards): contains 2 back variations for #42a/b, 4 checklist variations for #46a/b and #47a/b, and 1 name change variations for Schizo Fran and Fran Fran. This is the least valuable of the 3 sets.