In general I think it's dumb that MAC releases so many limited collections. That's like all they do. I know when we get a new focus product or collection from a company, 90% of the items released become permanent to the line, if not in our store, at least to the company and it can be ordered or found somewhere besides eBay.
This is why I don't go to MAC for new collections anymore. Everything is beginning to look the same, and that doesn't matter, cuz in two weeks when it sells out, it's too late to care cuz it won't be coming back.