Well, right off the bat, that domain name oughta raise some eyebrows.  No self-respecting exchange would slap together such a silly, meandering URL and  meanwhile scammers snatch up every cheap domain they can get their hands on if it is even tangentially related to a legit brand - in this case, Mercado Bitcoin. 

And another telltale sign here is an exchange demanding upfront payment for some kind of penalty or fee or whatnot.  They could just deduct charges straight from a user's balance instead of hassling folks for more money.

So, definitely a scam. There is no doubt.