Thanks to forum member marcusloignon for pointing out that ToysRUs is having a buy 1 get 1 50% off sale for LEGO Star Wars and Harry Potter for one day only on Easter Sunday April 24th. Remember to buy sets of equal price to maximize your discount. Also there’s free shipping in orders of $100 or more.
For in store purchases the coupon can be found here, for online orders use code 944864.