If you can get them for £300 brand new then go for them, that's a very good price, you'd probably be able to even make a small profit on them by selling them on eBay.
£320 is a very good price for them, mine need regripping which will cost £50-£70 so if I can get a new set for £320 and sell mine for £270 ish then I get new clubs throughout. You wot find a set of these for less than £200, if you do they are probably fake.
Hmmmm, not a massive concern now, I was going to get a new set and not bother regripping mine then selling them on to make most of the money back from a new set but not bothering now and ordered some new grips through my pro who's putting them on next Monday for me.