I got my first CZ at a local gun show... for $275. A Turkish contract overrun model. As the seller was doing the paperwork he said. "Ooops. We had it priced wrong. I'm selling it to you, because that was what we agreed to, but you're getting it for our cost." Good guy.
I got a CZ-40B for $325, shipped to my FFL. Great gun. I just wasn't all that interested in .40 S&W at that time. I like it a bit better now. About a year after I bought it I sold it -- for a bit more than I paid. I wish I had kept it, as that may be one of the best CZs.
I've paid more, but never as much as I see them selling for, nowadays. The only real consolation is that many of the competing guns cost even more.
Yup I used to buy used Sigs under $450. Now it is hard to find one under $600. I remember NIB CZs compacts & 75B for $425 or so. I paid $300 OTD for a 40P frankengun, they were 40 B slides on P01 frames. I could pretty much find any CZ for $350 - $375 from the right dealers.
The first CZ I paid over $400 for was my P01 which was around $450 and was well worth the price.
CZs have gone up but I agree not really much more than their competition.