Well, guess this needs a little perspective.
First, we had an special offer in the website before when a single card was available at all times. The card was one from the highest ranked and was replaced by another of the same kind. At the time, there were a lot of ***** about the same cards always rotating and many people asking for offers in the middle range and even in the bottom section of the ranks.
After that system was dropped, Totem created the current system adding 7 more cards to that offer. So, the original card offer at the top of the ratings is still rotating randomly and the other spots randomly rotates to offer at some point the rest of the collection, thus giving the buyer a lot more options and not just the top chicks, which proved to be a boring and annoying system before.
Plus, the calendar is back for everyone, the demo rotation, and that counts for another random card everyday and that card is never already in your collection.
So, even though everything can be perfected, maybe a better randomness to see less repetition in the daily 8, i think is a good special offer system and rather a generous one. ;)