Home Promotions BOGO CGC Grading! BOGO CGC Grading! By Chris - August 24, 2018 Facebook Twitter Been on the fence for CGC grading your comics? Now is your chance to save! Our sale runs August 31th until September 14th. Submit your comic to be graded of any grading tier at regular price and get your second comic graded of equal or lesser tier for HALF PRICE! Sorry no rain checks.