BuyInCoins via eBay offers the Easy Pineapple Corer / Slicer for $2.62 plus 94 cents for shipping. That's tied with our mention from a week ago and the lowest total price we could find by a buck, outside of the price below. It cores and slices a pineapple without damaging the shell.

A close price, Link Outdoor via eBay has it for $2.28 plus $1.31 for shipping.