First of all does anyone know if this is an actual drink?

If you don't know what I'm talking about, there's a variant cover for today's Daredevil and the site I usually buy comics from is selling it for $300.

What's so special about this energy drink cover that it's more expensive than any Daredevil cover I've ever seen? Is there a real DD energy drink coming out, and if so, why DD? Mark Waid made a point to establish that Matt Murdock is a health foods type of guy.. he would never touch an energy drink, am I right?