Don't buy 2 CU bags.... ITS A TRAP!
No seriously, the 3.8CU bale is super compressed and breaks out to almost 8 CU loose. The 2 CU bags are already loose and a huge waste of money.
$36/bale is a decent price for anyone not near in the Northern US.
Good info but that's the only size I see lowe's carries around here and Home Depot apparently doesn't have any according to the site unless you go with that special mix they have.