Apparently you aren't actually allowed to pick any bid when you're a contestant on Jeopardy:
"On Reddit, former Jeopardy contestants confirmed that there are banned numbers that you are not allowed to wager on Jeopardy: $666, $69, $14, $88, and $1488.
By banning every metalhead’s favorite number of the beast along with $69, it seems like Jeopardy producers are just trying to avoid some potentially problematic internet memes. But, the other three wagers — $14, $88, and $1488 — are all symbols associated with the white supremacist “fourteen words” slogan. It’s probably a good move to ban those.
So, there you have it Jeopardy fanatics. The five numbers that are banned from the show. Future contestants who feared that perhaps $420 was one of the forbidden wagers can rest easy."