I sold a set the same on Ebay couple of months ago.
Had bit of kerb rash on a couple and only one usable tyre and even that wasnt brilliant.
Listed with no reserve and sold for £350.
Had about 70 watchers and endless offers to end early.
You could do yourself a huge favour and get decent pictures of all four, including details of scuffs and such.
I have no idea in pricing of these wheels, but from what little I can see from the photos I'd hazard a guess that they're priced in a bit too high. Plus '£300-£400ish' is quite a big margin.
Get them cleaned up , take some detailed pics and get them on Ebay. Council scummers love big tasteless rimz, these are just the ticket. If all the tyres are legal and there are no cracks or big lumps of rim mia, I would expect £350 all day.