Walmart doesn't price match on stuff they don't actually sell. This Stab is actually sold by Homevision Technology, not Walmart. It's sort of like what Newegg.com does on their site now, ie, have different vendors that sort of advertise on their site. I'm sure that Newegg gets a commission from any sales generated from their site and would "assume" that Walmart does the same.
It would be nice if Walmart did price match though cuz we could save shipping charges, which amount to about $25 per unit.