Walmart offers the Sunbeam Alvordton 7-Piece Cookware Set for $15. Opt for in-store pickup to dodge the $5.99 shipping fee. (Amazon charge the same with free shipping for Prime members.) That's $3 under what most third-party sellers charge via eBay. It includes a Dutch oven, two saucepans, and frying pan.

Update: The price has dropped to $14.54 before in-cart discount, $14.09 after. Amazon is pennies more.