Hmm, yeah, it is their loss @-@;
But I think that most people would've ended up doing what you did. If you weren't going to buy it, chances are that others will buy it anyways. If it was me, I would probably hold that guilt for the rest of my Fiesta time, but I think that if you didn't take the chance to grab it, somebody else would anyways, so you should be glad you got it.