Three things to keep in mind.

1. You are not allowed to sell your vote.

2. If you were planning on selling your vote, it would be extremely prudent not to do so on eBay.

3. Federal prosecutors don't have a sense of humor.

From ABC News,

The student told investigators he made the eBay posting, adding, "That was a joke. It's no longer listed," according to the complaint.

"We take it very seriously. Fundamentally, we believe it is wrong to sell your vote," said John Aiken, a spokesman for the office. "There are people that have died for this country for our right to vote, and to take something that lightly, to say, 'I can be bought.'

. . .

Sanders and his attorney, Steven Levine, declined to comment Thursday. The charge carries up to five years' imprisonment and a $10,000 fine