Plenty of 'designer' stuff (plus lots of other tat) appears on SC and looks to sell so possibly worth a try
I guess your size/build will affect how they appeal to the masses
I tried eBay previously and got peanuts vs what I'd paid, hardly worth the hassle
nowadays I donate anything of mine I no longer wear to our local British Heart Foundation shop,
every now and again I receive a message or email saying 'your donation has raised £xx' it makes it worth while