I have three of these, one of the earlier version (no barrel rib; firing pin in frame) and two of the later version (vented barrel rib; firing pin on hammer). They are absolutely delightful to shoot. They load very quickly with the HKS speedloader, can be shot single or double action, shoot accurately, and empty shells instantly and automatically ejected when the revolver is opened. Several parts seem to be liable to breakage or malfunction: the plastic topped mainspring guide rod can break, but replacement parts are readily available and easily installed. The mechanism that ejects the shells and then pops back to the cylinder seems to be delicate.
You may happen to find a Sportsman really cheap, but they usually sell on the Internet from $200 to $300, depending on condition. I think some gun-maker should start producing a clone. I think it would be quite popular.
Drakejake