Here’s the info. on the variants for the TMNT Micro Series #1 Raphael from IDW.  Available on December 7, 2011.  Note the cover error for the RI B Eastman Retailer Incentive.

  1. Cover A (David Petersen) - regular cover shipped in a 4:1 ratio (A:B) in a single order (i.e., if shops order only 1 copy they get Cover A; if they order 4 copies of Cover A they can then purchase one copy of Cover B)
  2. Cover B (Franco Urru) - regular cover shipped in a 4:1 ratio (A:B) in a single order (i.e., shops must order 4 copies of Cover A in order to purchase one copy of Cover B)
  3. Cover RI A (David Petersen B&W variant) - 10 copy Retailer Incentive (i.e., shops that order 8 copies of Cover A and 2 copies of Cover B get this one free)
  4. Cover RI B (Kevin Eastman remastered Retro variant) - 25 copy Retailer Incentive (i.e., shops that order 20 copies of Cover A and 5 copies of Cover B get this one free)
  5. Cover RE Jetpack Comics (Peter Laird?) - Jetpack Comics Retailer Exclusive Variant; available for purchase from Jetpack Comics
  6. Global Conquest (David Petersen) - International Edition issued to markets outside the U.S.A.