I'm going to tip my hand here... I use this website to find 22lr.
22lr ammo rimfire
Lots of insane prices, but I just keep checking and spring when I see a decent price and shipping isn't too bad. Went to my local Cabelas today (To pick up some Norma that I found via ammoseek and ordered online) and they also had match grade German ammo for 92 bucks for 500 rnds. Spendy, and I don't need that kind of consistency.