We have the same problem when we try to raise funds for QFK at local craft fairs. We've had donations of full sized quilts or beautiful kids or lap quilts and folks expect to pay $15 or $20.
I also tried aprons which we priced really cheap (under $15)and barely sold any (although we got lots of positive comments on how cute the aprons were). I was soooo disgusted. But what can you do? I made quilts for QFK from my own stash-that's the best I can do.