I would avoid a recon MK5 rack. Get a low mileage MK6 rack (gen 3) off ebay or a recon MK6 rack. Not many rack suppliers touch MK5 racks with a barge pole now.
£268+VAT sounds a bit cheap. You're normally looking at £450-£550 for a recon gen 3.
If you go MK6 (you won't have a choice in the coming years) you will also need the wiring harness to go with it, and some VCDS coding.