Why not try the online shop at Sale Sharks website? (you would actually be better off with a Northampton Saints one!)
Rugby shop in wigan called down under leisure if you don't live near there order on the internet, its the best rugby shop you can go inn, its a little bit expensive but its worth every penny, it sells rugby league rugby union it sells everything.
Try worldrugbyshop.com, I haven't looked but they might have it. Or go to the manufacturers website they might sell it there
