$9 a box is pretty pricey by my book. I wouldn't even really pay that much for high brass birdshot. $5-7 is more typical for 7.5 or 8 shot.
Some people have trouble with extracting cheap shells because the aluminum base expands more than brass and gets stuck in the chamber. Most of the time it's not an issue and even If you do run into that problem, you usually fix it by switching brands or in the worst case by polishing the chamber.
[Remington 870 12GA][
Stoeger Model 3500 12GA][
Savage 116 .30-06][
Savage Model 10 Bull Barrel .223][
Marlin 336SS .30-30][
Marlin 39A .22][Marlin 795 22LR][
Beretta PX4 Storm 9mm][
Ruger MkIII 22LR]
They who can give up essential liberty to obtain a little temporary safety, deserve neither liberty nor safety.
Terry V Ohio Commentary