I've been keeping an eye out for one here, but they are very expensive. Have you tried the local thrift shops? I just saw a spinning wheel at one last week. I think classifieds like ann suggested may be a better bet.
I have bags of wool and fibre scraps, and I did a wool inventory yesterday, I have some small ends that are about 5 years old and a bit compressed and need carding so I'm sure I'll get my money's worth before long!