I’m not sure it qualifies as a dark pattern, but I was really frustrated by the Logmein pricing. I was paying a relatively expensive amount for my 100 computers package. Once I went over that threshold I had to convert to the 500 computers package which cost 4x was I was paying. That was true even if I had 101 computers and not 499. I ended up upgrading with a negotiated price but still don’t understand why it’s not a price per computer.