Yeah. I figured you really weren't
quite that mad.
I went to a Hobby Lobby in Georgetown, TX today (hard to get into) and picked up a Quest Zenith II to replace the one I lost 1/2 of at the NSL this year. No motors at that one either. Wonder if it's a liability sort of thing relating to the Austin area. The smaller hobby stores in Austin all carry them, though one of them keeps the motors behind the counter. The Hobby Lobby in Temple, TX (about 40 minutes to the north of Georgetown) has motors aplenty. Even Wal-Mart carries some.
The signs in that Hobby Lobby also didn't specify Estes, so I took the chance to replace the Zenith II cheaply. The clerk rang it up at full price, but when I said it was on sale, she said "It is? OK." and took 1/2 off. She then took the sale price on all the Krylon paint I bought, except the one can of Fusion, which was correct.
If she'd balked about the rocket, I'd have politely pointed out the wording of the signs, but if she'd persisted and said the signs were wrong, I'd have not pressed further (even though I'd have had a case), but I wouldn't have taken the rocket either.
No point in souring Hobby Lobby on rocket sales or on sales on rockets.

They're a pretty good source, and when rocket sale time comes around, they're an excellent source.
And it's a personal thing too. If I don't get the sale price and I get mad about it, I'm still in the same boat, but now I'm all worked up and unhappy on top of it. And if I raise a big stink and insist on my rights according to the signs, then I feel even worse because part of the source of my dissatisfaction is with myself. I wouldn't enjoy the rocket after that, and I'd have to give it away or something.