How much does this cost to the nearest dollar?

Godox Bowens Mount Softbox Speed Ring Adapter for Studio Photography Monolight Strobe Flash
Made of Aluminum Alloy material for high durability and assures years of corrosion and abrasion-resistant operation There are 12 slots for mounting rods to accommodate all size and shape of softbox including square, retangular, strip, octogon, and hexagon 12 x Install mounting holes(holes are 0.35 /9mm in diameter) Speedring can rotate 360 degrees and locks for convenient usage Compatible with Bowens, Godox, Visico excel, JTL, Mettle, Fancier, Calumet Travelite Studio Flash Dimensions 7.87 x 7.72 x 2.91 inches, Weight 1.22 pounds, model number SA-UB,

Price is $21.00
Price: $20.69