These seem to be the lure of choice for the Walleye in Pymatuning lake. Unfortunately, there is a lot of rebar and other snags in the area. We've managed to save several with a weighted lure retriever, but have even lost a few of those.
We generally use a local sporting goods shop and ask for a discount on the bulk quantities. Usually works. You could also contact Heddon and ask them for bulk rates?