The most I have paid thus far was 10cents a pound usually get them for free when I can.
If buying there things to watch for zinc and steel weights which are unusable.
Each weight has a clip on the back for mounting so if all the weights are the small ones you pay for alot of clips with little lead. Free and or WW from a shop that does semi tires are the best deals.
Depending on where you get them and average sizes 200lbs of raw WW might only yield 150lbs of usuable lead.