The only real negative I found are the sights are too small for me - I wear blended bifocals. That's the first thing I change. One other thing that may or may not be a factor for you on the SA manual safety is the upswept beaver tail. The beaver tails on other model CZs gives me a blister on the back of my hand after a couple of mags. Some people don't have that problem.
Price wise, I've seen online and local sales for as little as $500 recently. But they tend to be closer to the $750 range. I got my used one for about $625 total on gunbroker after all the taxes, shipping and fees.
You might also consider the SP-01 if you want a full size SA gun with a manual safety and upswept beaver tail. It's heavier and has a slightly larger frame due to the light rail plus I think they cost a little more.
Good luck with your search,
Pete