How much does this cost to the nearest dollar?

Captain O-ring - Orings for Pentek Water Filter Compatible with 3/8 Slimline Housings (3 Pack)
The Replacement o-ring (also called O-Ring for 3/8 Slimline Filter Housings is commonly used with filter models ACE and The o-ring has an approximate diameter of 3. Purchase this part if your unit calls for part number or What to expect This item includes three (3) o-rings in a resealable zip-top poly bag with Captain O-Ring branded packaging. Manufactured and warrantied against defect for one year by Captain O-Ring LLC. Captain O-Ring is a registered trademark of Captain O-Ring LLC. Part Replacement for Pentek Water (also called O-Ring (3 pack) Color Black Material Buna

Price is $13.00

Price: $13.09