I just bought Rem/UMC 115gr FMJ for 9.95/box at Dicks Sporting Goods.
Used a $10 off a $50 purchase coupon on Remington ammo so it came down a little more.
It works in just about everything I have incl Lugers and though I reload 9mm, I like to have a few boxes around for test firing repairs and when I get lazy.
AIM has some good deals on 9mm. Just get a large order together with some friends to keep the shipping down. I always tried to figure it to a dollar per box or less. No FFL needed to buy ammo from them.