What is a stake?

The amount you put on yes or no. Place 10, win 16 if you're right.

Your stake is what you're risking. On Foresee that's Maura, play money, so the risk is pride, not rent.

The payout depends on the chance when you stake. Backing a 62% favorite wins you a little; backing a 20% longshot that comes true wins you a lot. That's the market paying you for being right when it was hard.