Edited December 13, 2017
at 02:55 PM
Walmart has the Hyper Tough Soft Grip 3" Stiff Putty Knife for $1.06 but you must buy a minimum quantity of two. Free Store Pickup or Free Shipping on $35 order.
Some other deals on various size putty knives.
Hyper Tough 1.5" Flex Putty knife $1.02 (must buy minimum of two)
Hyper Tough Soft Grip 6" Flex Putty Knife $1.65 (must buy minimum of two)
Clauss Titanium Non Stick 2" Flex Putty Knife $1.24 (must buy minimum of two)