A lot of prices will stay the same, a lot of American manufacturers took a 5-15% price increase on ammo (which they regularly annually do). Federal on their .22 and 5.56 bulk increased 15% over last year. 9, 40, 45 took about an 8-10% increase.
Remington raised 5% across the board this year (if I remember right it was 3% last year). Hornady did a 2-8% if I remember right too.
A lot of the foreign stuff didn't change much, PMC and PPU weren't asshats like Century was and jacked the price on their products only to lower them back to normal recently.
Ammo today will be cheaper than it is tomorrow, but won't be cheaper than it was yesterday. It's a commodity that companies realize that people will buy no matter the price. Hell people were paying $1000 for 1000 rounds of 5.56 just 6 months ago, and look now, you can find it from $9.99-$12.99 per box fairly easy now