Hi
Well, I hope some people who have more connection with Spain and the situation there would help you with it, but just as my personal view, I would not go for such offers! when they ask for a lot of money, and want a big part of that in advance, and you have no control on the situation.
Anyways, if you decide to do so, make sure you know (almost) everything about them and their activities, and their Terms and Conditions!
Good luck