Piggybacking off of tauwyt's numbers, I did a bit more research.
There will be $29,555 worth of prizes from Blowout.
If all spots are filled, they'll total to $26,850.
In other words, though your odds of getting more than $179 worth are only 20%, Blowout will pay out 110% of what they take in. When you add in the cost to Blowout to ship out all of this, this promo looks better and better. Gotta save up for the next one!