Pectinex Smash is an enzyme used to clarify apple juice, oj, & other juices. And it's only sold in 25 liter containers. That's enough Pectinex Smash to clarify 17k liters of juice, so the folks over at Cooking Issues blog are selling off 250 mL batches for $20 a piece in order to justify the enormous cost of the 25 liter jug.
If you're interested in getting your hands on some, send an email here: firstname.lastname@example.org.
If you're interested in seeing more stuff Pectinex Smash can be used for, click here
, and here