My local Burger King has them for $3.69 or two for $5.
Bereft on the usual ketchup and mayo, the Extra Long Sriracha Cheeseburger comes instead with a dousing of watery hot sauce. It was light on flavor with a decent stinging heat and a fermented vinegary tang that reminded me more of Korean gochujang than Sriracha.
The lettuce and onions were pretty much covered in sauce and a little soggy as a result.
The toasting on the bun was very light, leaving a soft sponginess.
Nutritional Info - Burger King Extra Long Sriracha Cheeseburger (213g)
Calories - 480 (from Fat - 210)
Fat - 23g (Saturated Fat - 11g)
Sodium - 1210mg
Carbs - 45g (Sugar - 7g)
Protein - 26g