Kit Kat,
I've seen many eBay adds for seats with excellent down to really crap photos of the seats that they expect good money for, and yours aren't crap but they aren't great either. Take them out in the sunshine and take some good photos, try to include a shot of the underside of the drivers seat as this will show what module is fitted (this will confirm if they are heated or not). Just a heads-up that's all, no offence intended.
Price-wise, not too bad really considering they are memory, I've seen them advertised for a lot more, and yes red ones don't come up all that often.
Best of luck with the sale.