I'm a Power Seller www.bargainseekersintl.com. As far as I know you can list any used items on eBay, dirty or not, as long as you disclose that in the listing. I've seen a few listings with "well worn, with spots to prove it, party dress for sale", "Mike Ditka vintage sweater, holes and paint marks all over"... And the format doesn't matter. Just be honest and someone might be interested. Good luck selling!
BARGAIN SEEKERS INTERNATIONAL