alright, girls and boys, prepare thy wallets. every year I check http://bfads.net for good deals and this year is one of them.
walmart will have a lego and duplo set for $30.
lego 10664 – http://bfads.net/Item/Walmart-Black-Friday-LEGO-Creative-Tower/226984
duplo 10557 – http://bfads.net/Item/Walmart-Black-Friday-LEGO-Duplo-Giant-Tower/226989
bricklink doesn’t have the inventory for the duplo set, but the lego set parts out at ~$150.
a few years ago, Walmart had a similar deal. I bout $600 worth of the $30 sets. I made $1200 by selling just the sealed sets on craigslist. I kept a few for my personal inventory.
use this information wisely, as the more people that know about it, the more competition you will have.