If you really want to save money and recycle lead, try melting and casting your own. I'm not going to repeat all the safety stuff here with casting - go to the BC, & weights forum for that, but its pretty easy to get lead from a tire shop or stained glass shop (where I got mine), and melt in a pot with a MAPP gas torch or two (one underneath, one directly on the lead).
Then I took one of our old frying pans with the teflon coating, and tilted it on a brick so I could pour into the curved edge of the pan - trick here is utilizing the non-stick coating to de-mold the ingot. After casting several puddles in this kidney shape, I then welded (using the torch) the castings together in pairs (see the welds in the pic below), and the weights are awesome, as they form fit in a BC pocket quite well. I sawed off the ends of one for a buddy's weight belt too.