Walmart offers the Nerf Rival Nemesis MKVII-10K Blaster in Blue for $88 with free shipping. (Amazon has it in Red for the same.) That's the lowest price we could find by $12. This motorized, hopper-fed blaster holds 100 rounds.

Thinking of buying more than one? Add two to your cart at Amazon and the price drops to $140.80 with free shipping. That's $70.40 per blaster and a $59 price low.