Still White - selling

Has anyone has success selling on Still White? I have a brand new unworn dress I picked up cheaply but have decided not to wear

Ive had it on vinted for a while but get very low ball offers so I was thinking to try Still White but the charge you £20 to list which I don’t mind if it sells but I had no idea the success rate?

NB it’s a legit gown, 900ish originally, I got for 450 and put on vinted for 350 so I think the price is very fair but understandably will still have a very limited buyer market