if you have a shop near you that sells leather coats and leather handbags or things of that nature, try them, i got lucky, as i approached a very respected leather outlet, and he sent me to the factory where all the leather comes from, for all the stuff that is made, and they sort me out now, for what ever i need, and at very reasonable prices, sometimes it pays to shop around, i agree with some of the other lads, tandy are very expensive, and if you are just starting out, and you use say leprevo, make sure you add the vat, i think with leather it is allways better if you are buying in big quantities, you really need to look it over before you buy, it is much better if you can look at it first, as if you just order on line, you are not sure of the quality untill it arrives.
hope that helps mate.
lee.