Alice is willing to spend $30 on a pair of jeans, and has a coupon for $10 off she found online. She selects and purchases a $35 pair of jeans, pre-discount.
(Alice's consumer surplus, $5)
Jeff finds some steaks for $16 for which he would have been willing to pay $20. The butcher notices the meat is near the expiration date and gives him an extra 75% off.
(Jeff's consumer surplus, $16)
Nicole has in her possession a hockey puck from the 2010 Winter Olympic Games and sells it on eBay. She will only sell the puck if the winning bid is greater than or equal to $500. After bidding closes, the last bid stands at $500.
(Nicole's producer surplus, $0)
Claire is trying to sell her used calculus textbook online. She asks for $150 or best offer and is willing to sell for anything over $100. She is able to sell it for $125.
(Claire's producer surplus, $25)
Roy is willing to pay $2.50 for a sports drink. He notices the price is $2.79 and chooses not to purchase a sports drink. (Roy's consumer surplus, $0)