That's an awesome deal. I pay a little more than a $100 regular at my place for the same stuff.
I THINK they only have 9mm (250 rounds) and 223 REM (200 rounds) in the UMC Mega packs.
Remington does have UMC in .40 S&W in 50 round boxes. $19.18 at leBaron.
I just got my Cabelas catalogue as well and I noticed that it's 100 bucks for 500 rounds of 9mm American Eagle in the plastic ammo hauler. 250 rounds of UMC are 69.99
... I fixed my gaffe, Blazer, not American Eagle and it's 110 bucks. Either way, it seems like a not bad deal.
I personally have just about given up on trying to buy 9mm from LeBarons. The last 3 times I've been, they've been out.