I've found a couple of shops around that will save their wheelweights. Unfortunately, most of the places around here RE USE OLD WHEEL WEIGHTS!!! I just about crapped dwhen i heard that...
One place charges $20 for a full 5 gallon bucket, but they don't save them for anyone in particular, i just have to get lucky and go when they have some (usually about 1/4 bucket). Found a couple others that give them to me for free, big truck weights too. Fourth place i just have to buy the shop manager a timmies and he lets me go through the shop and take whatever i can find.
So if you go by that...say i get 2 full buckets, averaging about 130lbs each of ww lead after i melt them all and remove the iron, zinc, clips, valve stems etc... I pay about 8 cents per pound of ww scrap. Less if you factor in what i get for taking the seperated iron, zinc, valve stems, and steel clips to the scrap guy.