I thought I would just see what I paid for my 17” oem wheels nearly exactly a year ago from eBay, 95% perfect and with Toyo tyres.... £310.
The bronze does look good, but as others have said. The price of £650 is a little steep considering they are not the oem colour and they also could do with a refurb. That’s more than double what I paid for some a year ago in the correct colour, in basically perfect condition and with decent tyres. Also I had a bidding war for them and they were still less than half the price of yours.
Fair play if you manage to get £650 for them, but I personally think you should look at other sold oem wheels to get a better idea on a price or keep them for a few more years when they will easily be £650 worth. Either way, good luck with your sale and they do look pretty special in the bronze