Survivor Auction

The Survivor Auction is a special Reward Challenge where the players outbid each other for (usually sealed) items, whether for food or temporary use of amenities. There are also, albeit rarely, instances where there are game-changing powers they can outbid on, such as power to send another player to Exile Island, or an advantage at the next Immunity Challenge.

Jeff Probst has stated that when the Survivors finish the auction, some of the players keep their money as a reminder of home.

Rules
Prior to the auction starting, Jeff Probst announces the guidelines of the auction. In order for a Survivor to bid they must adhere to the rules.
 * Survivors are given a small amount of money (this may vary from local currency to USD$) and can choose to bid as many times as they wish using however much money they have.
 * Bids will be in increments at Jeff's discretion.
 * Pooling (sharing money with another player) is permitted, but in some seasons this option has been voided.
 * Food that is bought must be eaten before leaving the auction area.
 * The auction will end without notice.

Impact
The auction is well received by fans, primarily with seeing the contestants enjoying food and sharing it with their tribe mates or keeping it for themselves. It also provides an insight as to whether or not a Survivor will risk what they have bought in order for a concealed item which is typically low-standard local cuisine or an improvement on what has been won.

Survivor Auctions list

 * 1. Survivor: The Australian Outback - episode : Let's Make A Deal
 * 2. Survivor: Africa - episode : We Are Family
 * 3. Survivor: Thailand - episode : The Ocean's Surprise (this is the only time a Survivor Auction has taken place before the merge)
 * 4. Survivor: The Amazon - episode : Q And A
 * 5. Survivor: Palau - episode : I'll Show You How Threatening I Am
 * 6. Survivor: Guatemala - episode : Price For Immunity
 * 7. Survivor: Cook Islands - episode : You're A Rat...
 * 8. Survivor: Micronesia - episode : I'm Ruthless... And Have A Smile On My Face
 * 9. Survivor: Gabon - episode : Nothing Tastes Better Than Five Hundred Dollars
 * 10. Survivor: Tocantins - episode : The Ultimate Sacrifice
 * 11. Survivor: Samoa - episode : Off With Their Heads!