Russell, I've been getting relatively inexpensive leather each year from the Tenn Classic. There is a vender that sell oil tanned sides for about half price($60). I've been buying one or 2 each year for the last 4 or 5 years. The items in my pic above is the leather I got at last year's Classic.
Crazy Crow and Moscow Hide, both sponsors I think, have leather, hides and fur. Most companies have sales and discontinued deals.