The Sandwich Knife actually consists of two knives, with one blade offset vertically so when you cut from a loaf, it keeps the bottom of the two pieces of sandwich bread attached. They'll cost around $30 - $40 depending on how quickly you order one, and whether the Kickstarter actually gets funded, which isn't looking super considering it's only collected about $1,000 of its $18,000 goal. I dunno, maybe they underestimated people's faith in themselves to be able to slice a piece of bread without cutting it all the way through. Because, honestly, if you're old enough to read this and can't manage that, I'm fairly certain you have no business handling knives in the first place.
Keep going for the Kickstarter video, then I'll take a turkey club.
Thanks to Opio, who wants a knife that takes a triangle out of the top of a sub roll like they used to do at Subway before they changed the process and ruined everything.