The CZ-52's were cheaper a few years ago, the supply has dried up, now they cost as much or more than the tt-33's that are flooding the market for the dealer price of around $200.And the si-fy looking cz is no where near as classy as as the browning knockoff TT-33. Still would not recommend either for carry due to its cartridge. Well unless you are going after persons in body armor....
The cz82's are nice, for a mutant macraov. A good cheap carry pistol if needed.
Century arms so far has the best price for 7.62x25, bought the case of the cheap cracked neck stuff, late production, just had sizeing issues with the polish machinery I suppose. Works fine in all pistols, including my cranky C-96 broomhandel. Some short recoils out of my newish CZ-52. But the springs are rather new and the ammo is on the lighter end of the spectrum.
As far as corrosive, the bulgarian stuff (in 16 round packs) is. But any ammo from the 60 and newer should all be (assuming it is eastern block) all non corrosive. I don't know,exactly what dates witch country switched over. I use gunzilla, takes out the corrosive salts and cleans the bore. a CLP that actually works!....