How much does this cost to the nearest dollar?

Stove Knob Covers for Child Pack Gas Stove Knob Covers -Transparent Design, Stove Guard with Strong Adhesive,Protect Kids for Oven/Stove Top/Gas Range (Transparent-Black)
Universal Size——The size has been upgraded to fit more gas stove and oven knobs.The big diameter is the small diameter is the height is The distance between the two gas stove knobs should be greater than The stove knob height should be less than The minimum diameter of the gas knob should be less than will be better（If the diameter is more than you may need to remove the button before installing). High Temperature Resistant——The material of PC can resist to high temperature of 120℃. Please remember to mesure your knobs size and the distance between. Clear View——The Transparent Design allows you to operate

Price is $7.00
Price: $6.59