Susie, yeah, it's a pain, but think about it. You saw something you loved and the price was agreeable to you. And no, you couldn't have had it for less, because it sold out. I don't think you should let that ruin your enjoyment of what you bought. At some point we have to just stop dwelling on finding the lowest price or we'd never buy anything until end of season or at resale.
I do think Nordstrom shouldn't do this to their NAS. It does make a person doubt it. But you did get good things at a good price that you couldn't have gotten if you had waited. I would keep them and enjoy them.