I'd put them up for double that, especially if you're offering a warranty. I sold my Yardking for an undisclosed sum north of $100 recently. I think a lot of women prefer a 16". They're nice and nimble compared to a regular size domestic mower. They lady buyer said she can't handle a larger mower.

Ahh, if only victa had kept producing the thumblatch catcher series, they would be in better shape today!