I've never had anyone say anything directly to me, but I made something for my mom a few years ago (not a quilt, but it was pretty time-consuming).
A few months later, she had it out at her yard sale. She knew I was coming by (and when), but she didn't even bother to "hide" it so I wouldn't see that she was selling it. :evil:
I picked it up, and commented that I made it (which she knew). She didn't say a word.
Then I asked her how much she wanted for it, and I took it back home with me. :P