Certainly it is less attractive than its previous incarnations, but, in my opinion, it remains one of the best of the special offers - one of very few in which you have complete control over which cards you end up with and know beforehand how much it will cost to get them.

You get the best percentage refund, 20%, if you buy 5 cards that are equally priced and the best absolute value for the refund if you buy 5 expensive cards. But no matter which 5 cards you choose you effectively get one of them at no cost (ignoring for now the slight complication if you run out of credits before your 5th purchase).

To some extent, at least for some users, the previous versions of Cashback encouraged purchasing old, cheap, cards to get an expensive, 30 credit, card for free. The current version encourages either buying newer cards or buying 5 of the rarer more expensive cards if there are 5 left in the store for you to buy. But if you do that make sure that your purchases are properly sychronised - you do not want to accidently qualify for the refund after buying 4 expensive cards to get the refund for a cheaper card bought the day before.