Unpainted or painted? I’d just have someone pour you some with the exact weight and hook preference. EBay and cabelas has bulk jigs I believe also. You want shorter shanks?
If you shop at any retail shop you are going to pay a pretty penny. Most are hand poured which means the maker has to make his profit and then the retailer marks it up another 75-100% to make their profit. Always cheaper to buy straight from the pourer/maker.
Most bulk jigs are made in China. Painted there too. There are some custom casters who do the spin casting here and can make a mess of jigs in a short time. You need to snoop around to find the custom guys.