How much does this cost to the nearest dollar?

Drymistat Humidifier Tube - 2 Pack
Prepare the DryMistat for First Time Use Step 1 Some water evaporation may have occurred while DryMistat was sitting on the store shelf. Step 2 Break perforated safety seal on caps. Remove solid cap from tube and discard it. Step 3 Install the perforated Cap on the Tube. Step 4 While holding the tube vertically, tap it on a hard surface to force the crystals downward. Step 5 If the crystals are above the ‘Fill Line’ start using it right away. (If below, follow Refilling instructions) Refilling the DryMistat When the crystals fall below the “Fill Line’ (and are above the ‘Time to Add Water Line’), it’s time to add

Price is $15.00

Price: $15.23