I tried to find some 45-70 a few months ago and it was all gone. The shop said some of the boxes have been sitting on his shelves for years collecting dust and they even sold out.
The only thing I’ve consistently been able to find is shotgun shells. Even the odd sizes are all sold out here.
Wallyworld has raised the 100 ct. box of clay loads from $20.97 to $ 26.97.
My local Wally worlds (I have three near me that I visit), all have roughly the same ammo on the shelves. .22-250, .25-06, .243, .270, .300wm, .300 wsm, 7mm mag, and 6mm. No handgun ammo (I did get lucky and find some .40S&W a few weeks back). They had .22 short and .22winmag, but those are now gone. They also carry .17hmr. Shotshells are also scarce. Only a few boxes where they had cases of 250 a while back on target/bird loads.
None of the centerfire rifle ammo is less than $1/round.