I've sold my last 2 sets for 150 each. That did not include shipping since both were semi local sales. Might want to consider lowering your price if you want to move them. GLWS.
Dan 1984 Ur quattro 1985 4000 S QUATTRO Crashed 4KQ + 40v S8 engine + tubing bender + My BFF = 1987.5 Coupe GT Special Build
A set just sold on motor geek for $275, I paid this amount for these so I think yours was cheap tbh. I would sell for more in the uk as I've done in the past but I don't want hassle of shipping to uk atm. I'm in no rush to sell.