You don't have to buy a new Sphinx. Older ones are available. The older ones sell in the $400 - $700 range, and I've got two.
Great guns, and superior to my older BHP and several of my CZs. They are, for all intents and purposes, low-end custom guns.
Mags are hard to come by, as are some parts, but you can get some stuff directly from Sphinx, in Switzerland. (They don't break much, so parts generally are not an issue.) (CZ factory mags generally work, but the Sphinx ejector can bump them if they're not modified.)