Score a two-count pack of ZzzQuil Nighttime Sleep-Aid for $0.50 at Walmart! Look in the trial/travel section for clearance items. I found ZzzQuil marked down to $1.00. There is a $0.50 Checkout 51 rebate for ZzzQuil that does not have any size restrictions. Buy the two-count pack, pay $1.00 out of pocket, and redeem the rebate for a final price of $0.50.