5x2 - Flip or Flop

Tarek and Christina are contacted by a realtor about an exciting new listing. So new, in fact, that the realtor doesn't even have keys yet. If Tarek and Christina want to buy this house, they'll have to do so sight unseen. The price is right and the profit potential is huge, but who knows what lurks behind that front door? Can Tarek and Christina stay on budget or will they be left clawing for profits on this cat nip flip?