I have bought Pepper Spinner baits for $3.00 on clearance. And I know there were some War Eagle on clearance for $5.00 before at Walmart. I make it a routine to check the clearance spot for things like this when ever I am in there. If you want some to toss into nasty stuff the $1.00 China ones do work. And I doubt you can find any cheaper ones. Yes some people just cant fathom using them but they do catch fish. In the junk its not like the blades are going to be doing a lot of spinning anyway. I will say the better higher priced ones do run smoother the blades spin much better etc. I use these more where I know the blade spinning is actually part of the attraction not the reaction strike from it banging around off of junk.
You can use spinner baits everywhere. They work in the junk, near lay downs, in the weeds, banging off rocks, and on open water deep and shallow. About the only places I don't use them is in mats.
Some say they like windy days as the best days myself I use them year around cold, or hot, spring, or fall, summer, winter. I've fished them in the rain and wind and caught fish in every way I have tried them.
Just my experience most common sizes I use are 3/8 oz or 1/2 oz. My preferred colors white, chartreuse, or a combination of the two are a very good combination and equally so would be black or a black blue mix. Colors are really similar to other baits as to what works in what conditions. Colorado smooth and hammered blades in nickle/chrome tend to be my more common blade types. Blade color and styles all have different effects and there are plenty of write ups on this is you do some searching.
I do not use a training hook. Oh I mean a trailer hook. I refer to it like training wheels. Once you learn to fish the bait the right speed and set the hook at the right time you wont need that. Just look at it this way at 17 if you still had training wheels on your bike because you fell at age 3 or 4 go ahead and add the trailer hook.