The Burger Addict
Fleur Burger 5000
Fleur Restaurant, Las Vegas
Cost: $5000, or $70
While Hubert Keller's FB 5000 comes loaded with Wagyu, foie gras, and truffle, he's using a little fuzzy math to make this FB 5000 reach such an insanely indulgent price by serving it with a bottle of '95 Chateau Petrus, which is apparently "good".
Old Homestead Steakhouse
Old Homestead Steakhouse, Boca Raton
A cut of USDA Prime, Japanese Wagyu, and Argentinean free range beef from the Pompas all walked into a steakhouse... only they didn't walk out, as the centuries-old NY steakhouse's now-defunct Floridian outpost decided to mix them all together into one supreme patty.
DB Bistro Moderne
DB Royale Double Truffle Burger
DB Bistro Moderne, New York
Cost: $140, seasonally
When Daniel Bouloud decided to reinvent the burger, he reached deep, with a ground sirloin prime rib stuffed with foie gras, wine-braised short ribs, veggies, and black truffle, with an extra two layers of black truffles topping it off -- along with horseradish and tomato confit. All that truffle means it's only available in the thick of winter, when everyone's luckily really really rich.
The Richard Nouveau
Wall Street Burger Shoppe, New York
Until it shut down in 2011, WSBS actually served up two of their Richard Nouveaus per week -- a $150 burger created specifically to out-duel the DB Royale Truffle -- with gold flake-laced trufflle mayo spread atop its 10oz of Kobe, foie gras, truffles, 'shrooms, and Gruyere.
Burger King, London
Wagyu, white truffles, pata negra, Cristal onion straws, Himalayan rock salt, and shallot mayo. From Burger King. You would not like fries with that.
Liz Steger / Serendipity 3
Le Burger Extravagant
Serendipity 3, New York
From a NY spot known for appearing in the amazzzzzzing John Cusack/ Kate Beckinsale movie of the same name, LBE's got white truffle butter-infused Wagyu, smoked sea salt, cave-aged cheddar, shaved black truffles, Chinese Kaluga caviar, one fried quail egg, and a blini, and it's all held together with a diamond-encrusted gold toothpick, much like John Cusack's career.
The Douche Burger
666 Burger, New York
Intended as a f-you to the rest of the expensive burgers with "rich people stuff" on them, The Douche Burger's quite possibly the most expensive food truck item in existence: a lobster-, truffle-, and caviar- topped, foie gras-stuffed Kobe puck that's slathered in champagne steam-melted Gruyere and doused with Kopi Luwak coffee bean BBQ sauce, then served in a gold leaf wrapper. The guy who sells it wears mink coats. Seriously, he does that.
The Absolutely Ridiculous Burger
Mallie's Sports Grill & Bar, Detroit
Mallie's is a little competitive, m'kay? They kinda like having the world's largest burger, but that's not enough for them -- they've gotta outdo themselves each year. They're still working on the 2013 iteration, but the 2012 version of their Guinness record winner for largest burger weighs 338lbs, including 30lbs of bacon and 36lbs of cheese. Unlike the others on this list, it's not exotic -- just big, and it's not even sold for a profit.
Cultured Beef Burger
Maastrict University (Cooked in London)
Ok, so maybe you don't wanna eat the petri dish burger just yet -- at least, not until they grow some fat in it for flavor and make sure they won't SPONTANEOUSLY TAKE YOUR ENTIRE BODY OVER ARHGRHGHRGH -- but still, for a simple 5oz meat puck, $330,000 is a heck of a steep price.