It's a good deal for them, at least better than being unemployed. Of course, p2f should be forbidden, but it is not, so that's what we get.
Well, actually, it isn't.
The pay is so low, it is even LESS than minimum wage in the country I live in. (NL) minimum wage is €1502 PER MONTH.
So to all pilots that might be considering whether to fly for Vueling, think again. You might as well move to Amsterdam, flip some burgers at the local McD, and make more money. Saves you from paying up for a type rating.
And when you make that kind of money in NL, you don't pay taxes. Don't worry.