A melting pot is going to cost $75
The jig or sinker molds are $50.
You'll have to do your own math.
Starting with how many jigs you & your fishing buddies buy yearly.
You can purchase the molds from "Do It"
https://store.do-itmolds.com/
Then you need a source of lead.
Local tire shop is where I'd look.
Amazon
eBay
Please always melt & pour hot lead outdoors "OR" in very well ventilated area.
Lead fumes are toxic
Like a running car engine in the garage with the garage door closed !
Tight Lines
Dan
Thanks for the information brother!