Moved to Arizona several years ago. Although for a time 9mm & 45 was a bit difficult to obtain, very few shops were completely sold out, most only allowed you to purchase x number of boxes total. Usually 2 or 3. Not of each kind, 2 or 3 total of whatever you needed. As of the last week in May, things have improved significantly both in availability & quantity you can buy. Price has also started to improve. At the peak we were paying .38-.41 cents a round. Now you can find it at .20-.23 cents per round at many places.
I’m also fortunate so far as I work 12 hours a week at a gun dealership in order to get some spending money for my Pickleball addiction. The #1 gun we sell for in home security/protection is the Remington 870 youth model 20 ga shotgun. Many of the ladies prefer the lighter recoil of the 20 and also the shorter barrel length of the youth model & at room sized distances not a huge difference in the pattern between a 12 & 20 at 10 feet. Many folks live in gated retirement communities so most load up with 7.5 birdshot. Main reason I’m given is that most walls will absorb the birdshot and not go on to visit your neighbors house.