Names, going clockwise from top left:
_ Elasti Man
_ Silver Cyclone
_ Scarlet Scarab
Q: How many exist?
A: No one knows. They were never officially released. There was just a small run that sold straight from China. I don't think anyone knows exactly how many test runs are made of something like this that is never actually released.
Q: Current market value?
A: Only way to know is to see if they've sold on ebay and see what they actually sold for. They show up so rarely, that it's probably hard to find those numbers. I don't remember any recent auction for these or how high it got, but I haven't looked for it recently either. I think they are rare enough that the remaining action league fans would probably drive the price up on an ebay auction trying to get them, but who knows?
The other answer is that their market value is $10, including shipping, and I'll PM you my mailing address.