I've noticed that Kohl's will take items back to full price for their BOGO-type sales, then after the sale cut the price (on top of which you get to apply the 30% off code). So you really can't say whether or not the BOGO deal will be better - in this case unfortunately, 20-20 hindsight is the only thing that will give you the "right" answer. I'd say if you are happy with the price under the BOGO sale, then buy them. And just don't torture yourself by checking the price afterwards