2 key ingredients in a spinnerbait are the swivel and the hook. When you go to a cheaper bait, the first thing they cheapen up is the swivel. Sampo IMHO makes the best swivel by far, and about any way you slice it, a Sampo swivel costs a dollar. There are other brands. The Worth Swivels are pretty good as well, but also nearly the same price. Then you get to the imported stuff, and its more or less junk, but it also only costs about a quarter. The cheapest of all swivels is the barrel swivel (about a nickle). By design, it doesn't make much difference who made it, they are all about the same.
Another key ingredient is the hook. Sorry hooks cost you fish, and I'm sorry but I don't have time to piddle around with a stone sharpening hooks, besides, If I'm twice as good at hook sharpening as I am at knife sharpening, It won't make much difference anyhow. I trust the higher end Mustad hooks, the Gamagatsus, and Owner. I don't trust the hook of the month. Good hooks cost about a dime each in quantity, cheap hooks can be had for less than a penny.
Buying spinnerbaits is a pretty much you get what you pay for proposition.
Skipper