Contrary to what someone else has noticed, I've found the ones I get/got regularly vary a decent amount. (Notably CVS which was a regular, then vanished, came back briefly, and hasn't been seen in ages again, Safeway does it, etc. I've never noticed it with Ulta previously but I've only bought it a few times in the last year)
But I also think something is DEFINITELY going on because there are FAR, FAR, FAR fewer on MGCP than I've ever seen before - including than what I saw 2 days ago.
In fact, I only see about 35 total choices, when usually there are about that many per most every category - at least...almost every food/dining card is gone (and that's easy to see)
Maybe they are replenishing or else getting cards from a new source soon because otherwise there's hardly enough there that Swagbucks will ever get anyone buying them for Swago, etc. because there are so few choices left now.