Bed sheets for backing quilts?

[RachaelD]

Spotlight have percale 250 count sheer sets for $30, if they are 100% cotton would they be ok for backing quilts?

[sable]

I would want to have a look at it outside the packaging which would give you a better idea of the weave tightness; especially as that's no longer 250 threads to the inch; tends to be 250 threads to 10cm instead. I have used a good cotton sheet to back a quilt before now and it's worked well so far.