Previous posters make a good point.....while a gun may be chambered for 9x18 Makarov, they may not be true Makarovs. They may be excellent guns, but not true Maks. Caveat Emptor.
That said, I truly enjoyed my EG Makarov when I had it; it shot like a laser, recoil was negligible, and it defined reliable and ease of maintenance. The only reason I got rid of it was I much prefer my revolvers, and since I'm not a collector, if I'm not shooting it, it's gotta go.
Holster selection wasn't the greatest with a Mak; although there are a few makers out there, you have nowhere near the availability that you have with other guns. I myself prefer IWB/tuckable holsters, and the only maker I found that accomodated the Mak were Blade Tech and Milt Sparks. While I'm sure that these two aren't the only makers that do tuckable/IWB for a Mak, it was slim pickings compared to my options with a K-Frame or 1911 (for obvious reasons, of course). The Uncle Mike's Model 1 IWB holster is a pretty perfect fit, however, as is the Wilderness Tactical Safepacker Officers Model.
Ammo options were hit-and-miss as well. Not much in the way of premium JHP's available (I ended up using Hornady XTP's), and keeping an ear to the ground can help you dig up imported FMJ for plinking at a reasonable price. I was lucky that a local gun shop had a boatload of Barnaul 95gr. FMJ that seemed to sit forever, so $5/50 round box was what I was used to paying. Prices online seemed to be a bit higher, however, and seem to have gone the way of the 7.62x39 ammo a few years ago...a bit more expensive than it was. You can vote with your wallet, however, and buy from the cheap vendors when they post it for sale. By so doing, and unless you find a cheap source like I did, you can keep feeding your Mak for around the same you'd feed a 9x19.
As always, regional pricing is significant, and YMMV. Good luck with your search.