I rig my own out of slidding sinkers and 22 gauge coper wire. I just bend a loop in the wire and tie directly to the wire. This method has worked great for me. I don't know why drop shot weight prices are so inflated. I've fished with friends using store bought drop shot weights while I use the ones I made and there's no difference in success. I also catch a lot of fish just putting a split shot under sliding sinker. This keeps the weight easy to adjust and when you snag the bottom if you pull on it hard enough the split shot will pull off you'll just loose your weights. Either way It's easy and it works. Cheap too, you'll need that extra $$ for gas. Good luck.

jerryG