that website's business is getting people to sign up
you sign up for a free trial, probably have to enter a credit card, and they bank on you forgetting to cancel
there are tonnes of sites like that, which lure people in with the promise of a good investment opportunity, but typically foreclosed homes are auctioned off (i believe), so i highly doubt you'd actually be able to buy that house for that cheap.
in short, don't bother making an account, and certainly don't try to buy that house