As it happens, all eight of the Indy LEGO sets released at retail so far are currently on sale at Target until Saturday. The discounts range from a dollar off the Motorcycle Chase and Jungle Duel sets (both normally $9.99, currently $8.99 each) to eight dollars off the Temple of the Crystal Skull (normally $79.99, currently $71.99).
I'm tempted to go and pick up a second copy of each of the ones I have and two of each of the ones I don't, but I don't think I'll be that reckless. I do want to take at least some advantage of this, though.