Walmart offers the Nerf Zombie Strike Biosquad Zombie Abolisher ZR-800 Blaster
, model no. B0681, for $24.88
. Choose in-store pickup
to dodge the $4.97 shipping fee. Outside of the mention below, that's the lowest price we could find by $2, although most stores charge $35 or more. It fires water, Zombie Repellent fluid or Zombie Strike darts, and includes refillable water cartridge, Zombie Repellent fluid and eight Zombie Strike darts.
Note that A Simple Way via Amazon
offers it to Prime members for $24.50 with free shipping, however stock is very limited.