[quote name='rcannon']I was able to get seasons 1 & 3, guess I'll try again soon.[/QUOTE]
Definitely keep trying. If it helps anyone, Target gets their stock in on Monday, Wednesday, and Friday. Their stock usually comes in as early as 4am, so don't be afraid to call close to their opening.
Don't let anyone tell you that they "doubt they'll get anymore in", because that's what they told me a couple times, but I continued to call, and they've been consistently getting more in (I picked up 1, 4, and 5 sets one day, and 2 and 3 today). Just be warned that they seem to getting in very small shipments at a time (i.e. One copy of each season), so act quickly.
Hope this helps someone.
Edit: Just another tip: YOU CAN NOT GET RAINCHECKS!. A worker specifically told me they do not give out rainchecks for temporary price cuts - only sales. If you want to try and see if an employee is dumb enough to give you one, and then run into another employee that is dumb enough to accept it after August 31st, I guess that's your business, but I would not put your trust in going that route.