I went online to try and buy the only deodorant I like but my Citi credit card rewards no longer allows me to choose the amazon.com gift certificates I love. Now instead I can purchase the same items from Citi's rewards site and they'll be fulfilled by amazon. The only problem is that I can pay $17 for a 6-pack with the gift certs, but on Citi's site they now want to charge me the equivalent of $39 (at a "special price" down from $44!) for the exact item, and shipped from the same company! The audacity would be amazing if it wasn't so disgusting.

Capitalizing maliciously on people's ignorance is one of the things I find disgusting about human beings. (But I am also an investor in Citi since Citi is a member of the S&P 500...ugh.)