That seems to go for pretty much all consumer-grade SLRs now. People either want the top end AF bodies or the manual focus mechanical beasts. I know I could get hold of a Pentax SF-series body for under £10, for example. A K2, LX or MZ-S would be a lot more.
It may be that the dealer got the bodies as part of a collection and expects to make their profit from the lenses.