How much does this cost to the nearest dollar?

KN002 Electrical Knob Kit Compatible with Oven Range Burner Replace for GE MA-XP6 RK103 4 Pieces Black Control Knobs Replacement with 12 Pieces Adapters
Features Control knobs Use tip The size of the shaft in your stove or oven should match the D posts inside diameter of our control knob, only works under this condition. Black control knob and adapter Specifications Material plastic Knob diameter approx. 1.54 inch/ 39 mm Knob height 1.02 inch/ 26 mm Insert knob diameter 0.43 inch/ 11 mm Inner diameter of adapters Short adapter approx. 6 mm/ 0.24 inch Long adapter approx. 8 mm/ 0.31 inch Height of adapter Short adapter approx. 14 inch Long adapter approx. 

Price is $16.00
Price: $15.99