For Sale: Digital Camera. Estimated Price: $500,000 to $750,000. Are you in need of a new digital camera? I have a deal for you. It's a one-of-a-kind Leica that will cost an estimated $500,000 to $750,000. What about a new Mac computer? I know where you can pick one up for about $60,000. Need some new headphones? I have a deal on those, too. A pair of solid rose gold iPod earbuds for about $25,000. Too pricey? Don't worry, most of the money is going to charity. These fancy gadgets are part of the "Jony and Marc's (RED) Auction," which is being held on Friday in New York by Sotheby's to help benefit RED, the charity founded by Bono and Bobby Shriver. The names "Jony" and "Marc" in the auction's name are for none other than Jony Ive, the designer behind some of Apple's most successful products, and Marc Newson, a renowned industrial designer who has created aircraft, furniture and clothing. But this will be the pair's first collaboration on a Leica camera. And, most likely, their last. According to a Leica spokesman, the Leica M (RED) camera took two years to design and build and is the only camera ever designed by Mr. Ive. It's also, as far as I can tell, the only digital camera to cost more than half a million dollars. Even by Leica's standards, this is an expensive camera. The special-edition Leica camera is made of die-cast magnesium and anodized aluminium, and comes with a 50mm f2.0 lens. A similar model usually sells for about $4,400. Of course, this camera has something else unique to it - it's inscribed with "Designed by Jony Ive & Marc Newson for (RED) 2013 edition 01/01." While Mr. Ive and Mr. Newson helped design some of the products in the auction, other objects were selected by the famous design duo, including an Hermès "Cavale" horse saddle, an Ettore Sottsass typewriter and a number of Dieter Rams audio products. It's unclear who is going to bid on, or eventually win, the $500,000 camera, but whoever it is, I hope they get a really good camera strap for it, and some even better insurance.