If you get a metal strapped version and are looking for a leather one don't do as I did and type 'Ball Leather Strap' into eBay as a search (shock) (horror) :o
I bought a ball watch through them in March, worked well. i usually use paypal + credit card when am unsure about the seller.
I went to their official site and signed up for an extra year of guarantee no problems. Papers look to be OK.
Which Tag did you get?
Excellent deal. I had a ball watch and it lasted me many years until the window frame around the date dislodged and became loose. It trapped the hands from going round and destroyed the mechanism to change the time. Such a shame because I loved the watch. Beautifully Swiss made with sapphire crystal lens that never scratched. I ended up buying a £2200 Tag and have had endless issues with it. It's been returned so many times from moisture ingress, poor time keeping and self winding issues that the warranty has been extended each time and I'm in the 4th year with it. I hate it. Ball quality is incredible despite my slight hiccup. Go and see them at Ernest Jones if in doubt about selecting the brand