If the mags are decent, that is a very good price for new production. I have not seen similarly priced used CZ82 magazines for 1 1/2 - 2 years. Let us know if they are any good ...
I ordered three this morning, and they are shipped already. I will chime in once they have been tested.
Updated Sunday, MAR 30: I received the mags yesterday (Saturday). They look right, and have the beveled base plate found on the original mags. Not being at the range yet, things I want to check are limited. I have verified that they will, in fact accept 12 rounds. Springs are stiff, like the originals, so I had to use a magazine loader (Maglula) to fully load.
The mags insert correctly into the CZ-82, and the mag release button ejects them correctly. It's raining here, and I will wait until things clear to go outside and feed the rounds and verify that that occurs correctly. (I have a rule about doing that in the house.) So far, these act and look line good magazines. More later. $19.95 each.