Great price! IMO/IME, for what you get and the quality of the gun, the CZ 75/85/97 guns are a bargain at MSRP. $400 was a steal for the gun that you bought there.
I'll also make my standard recommendation - install this kit in your 75 B to make an already great gun significantly better for plinking and target shooting:
https://cajungunworks.com/product/54420-ultra-lite/
The Ultra-Lite kit will make DA very significantly lighter, make SA significantly lighter (even though it's not really mentioned much in the product description) and make racking the slide noticeably easier (not an issue, but still makes it nicer), and make it even safer to dry-fire if you want. I have the blue spring in some of my CZs and the lighter black spring in my 85 Combat. None have failed to light a primer, and the black spring makes everything (trigger pulls and slide racking) even lighter.