One could always check out Ebay to get a better idea of what kind of leather sporran you would like. There's an astonishing array of "plain leather day" sporrans out there. From there, you can either buy it in Ebay or search the vast quantity of online shops and hook yourself up. And remember, the dollar is doing very well against the pound right now.

Also, if you have a local shop, you could hook yourself up by supporting your local Scottish highland wear supply depot.