How much does this cost to the nearest dollar?

Prime-Line U 10683 Stainless Steel, Wood Window Vent Latch (2 Pack)
Product Description These flip action window sash locks are constructed of stamped steel, and they come in a stainless steel finish. Locks feature a universal design making them compatible with multiple manufacturer's wood windows. Designed for use on vertical sliding windows constructed of wood, and can be used on both single and double hung sliding windows. Each wedge-shaped flap swings out of the way of the alternate sash's path of travel, allowing the window to open. From the Manufacturer This stainless steel constructed window lock easily mounts on your vertical track. It helps stop your window in a ventilating position. The wedge flips out of the way to allow your window to open. Double hung flip locks like these are most commonly used on wood

Price is $4.00

Price: $4.31