Check out Craigslist as well I think Lexington is on there now, as is Blacksburg and Roanoke. There are usually washer and dryers under the household items for sale link. A lot of times people who don't necessarily live in those towns will still post so you may find something closer to home. I've seen things from as close as Marion for sale on the Roanoke page.

Roanoke's link is http://roanoke.craigslist.org/
Lexington's link is http://lexington.craigslist.org/