Yep ... $300 and not a dime more!
Keep in mind that (unfortunately) no one seems to be making a "pistol load" for the .22 MAG ... So, most of what you get
is a great big bang and light show (and little else in terms of performance), for some (currently) well over-priced ammunition!
I actually use Hornady's Critical Defense 22 mag in my little NAA revolver... About the best I could find for SD loads in 22 mag.
Relatively good penetration and a little bit of expansion in wet-pack. It's actually pretty impressive for a gun that will fit in the watch pocket of your jeans.