here's a couple of "bot" sites that will do the searching for you. Just indicate the caliber, and how you want to sort (newest listing, lowest price per round, etc). You can also set it up to only show ammo that is "in stock": http://www.gunbot.net/ammo/ http://ammoseek.com/
Ammo has been easier in my book. And it has been trending down in price. Now powder is still impossible. I found Varget last week in 8 pounds. I didn't want 8 pounds, by the time I had found someone to split it with me it was sold out. I should have just bought it. I guess reloaders are the biggest hoarders of them all.
I would like to have had 4 lbs of varget. That's a 1k 223 round reloads. I would like to have 8 lbs of it myself.