Pappy,
Unless I'm in a gun store for some other reason and they happen to have .22 rimfire at a decent price, I buy all of mine on the Internet. But I don't drive around checking gun shops for .22's.
Will pay 10 cents a round for good target-practice ammo, such as Aguila Match or Norma TAC-22, but for typical hollow-point ammo won't go that high, because I haven't had to. I had a decent supply of HP's before the stupidity of the Obama panic, but right now have a lifetime supply and add to it whenever a decent deal shows up. Just bought another couple bricks of TAC-22 on sale from an Internet store, during a "free shipping special."
However, I don't have any prejudices against non-American ammo, having discovered a lot of it is very good--and some American ammo isn't. Of course, a lot of foreign ammo was good before, especially Eley, but when ordering on the Internet, I often pick up a little of some other brand to try. Which is why I now have a case of Armscor (Phillipine) high-velocity hollow-points: They proved more accurate than the typical American bulk hollow-points in most of the dozen-plus firearms we own chambered for the .22 Long Rifle.
During the last 3-1/2 years least 95% of my rimfire purchases were made on the Internet. Just got in 1300 rounds of Long Rifle last week, a mix of CCI Mini-Mags and Federal AutoMatch, for less than 9 cents a round. Could pick up a bunch of the same right now, but won't unless it's on sale.
Unless I'm out in the field somewhere, I'm on the Internet anyway every day to answer e-mail and check the Campfire Classifieds. So I just spend maybe 2-3 minutes checking my favorite websites for rimfire ammo too. Which is what I'm going to do right now, and it will take less time than typing this post.