ES Enterprise Sales for an on-prem license might have been the worst sales experience I ever was part of as a customer. We were already a very technically self-sufficient org just wanting to get under a support contract. They made it so impossible to give them money we simply gave up and went with the open source fork during all the Amazon kerfuffle.

Dozen of hours of useless phone calls, and just nonsensical numbers coming out weeks or months later. Only to go back to the well and try again with a new team of reps after the first team inevitably churned out before any real progress was made.