How much does this cost to the nearest dollar?

HGP 6 x 4 x 3, 40 pack, Corrugated Cardboard Shipping Mailing Moving Boxes
HGP 6 x 4 x 3, 40 pack, Corrugated Cardboard Shipping Mailing Moving Boxes Quantity 40 Dimensions 6 x 4 x 3 (L x W x H) Lightweight, Single Wall Corrugated Cardboard Reduces Shipping Costs Manufacturer Harper Grove Productions, Part 40 box Weight 45.92 Ounces, Dimensions 10 x 10 x 7 inches, Material Cardboard, Quantity 1, Rank Office Products Box Mailers 1759, Available February 17, 2018, Brand Harper Grove Productions, Dimensions LxWxH 10 x 10 x 7 inches,

Price is $21.00

Price: $20.98