I’m not ashamed that I paid $800 for this. Not easy to find one. A little less expensive and just as fun to shoot are the PP pistols in 22. And these SMC 22lr are around $250ish.
I ran the list of ppk/s .22 completed auctions. Looks like some have moved under $600, up through to 950. You should be able to score in the 750 range without too much trouble.
Look for the Manurhin ones; they also made the Walthers, from post-WWII on up, but the Walther rollmark brings a slight premium. Both made in the same place, same exact pistol.
It's a higher level if you want the true PPK in .22. A lot more scarce, a lot more collectible. Rather more money, as well.
chances are in the last minutes its gonna go up a bunch unfortunately.