This is sort of a very different situation - whether or not you agree that their offer to be featured as the free app of the day is valuable, they were upfront that the rev-share in that situation is 0% when they make the offer.

In this situation they are claiming that it's exactly the same as cash to developers - that is, you will receive 70% of the purchase price. I have absolutely no reason to believe that they're attempting to mislead or be dishonest.

What shady history is that?