I'm starting to not like ENO... why?

http://www.eaglesnestoutfittersinc.c...LE-INSECT.html

They are charging $20 for peramethin treatment. Seriously? Something that will last a only few outings...something you can buy a lot of for $20 and do multiple treatments yourself. It seems like they are trying to rip off not so informed customers. Granted this is nothing new in the business world but it's something that pisses off this consumer. It bugs me so much I may get rid of my ENO loot.

sigh.