Walmart has Nerf Rival Khaos MXVI-4000 BLASTER, Blue or Red for as low as $5. YMMV. Some stores showing a lot higher price. Some showing $5. Good luck!
Wal-Mart
Blue
https://www.walmart.com/ip/Nerf-R…e/50029881
Red
https://www.walmart.com/ip/Nerf-R…d/50029885
Brickseek
Blue
https://brickseek.com/walmart-inv…u=5002988
Red
https://brickseek.com/walmart-inv…u=5002988