I dont have the receipt here in front of me but it was about that much. I also bought the filter oil of them for an extra 12 bucks. It is very very thick and gooey. They told me to put the foam in a plastic bag with some oil then squeeze it all around to coat the foam. Then squeeze as much oil as you can from the foam and what is left in the foam will be sufficient.
Good luck, I should have warmed the oil first to make it handle better.
