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I only needed backing plates, I already had the drums (they are the same drums used with surge brakes) so that saved me 50 bucks a wheel. I got them from Trailer Brakes | etrailer.com . That said, I've had them for a few years (and they still work perfectly) but they have gone up 9 bucks a wheel since I bought them. Etrailer is an excellent resource, but if you need/want to buy stuff locally, Nuera (pronounced "new era", not "nwooera") in Nashua has great prices and a huge inventory. If you don't like your axle, you might be able to replace the axle with one that is pre-assembled with brakes for not much more than the cost of adding brakes to your axle.