I used to visit the magazine vendors every time I went to a gun show. I finally found one but the price was way too high. Since I have a couple of other pocket pistols in .22 (A Walther PP and a Hungarian copy) and each came with a spare mag, I just don’t worry about it any more. Still would like to have a spare one tho.
I pocket carried a Phoenix Arms .22 LR for years, with an extra mag in the other pocket. Great little cheap gun. I even have two of them in stainless and the interchangeable five inch barrels for range fun. Does Phoenix arms make a .32 that’s reliable?