The money side is the least of our worries.
It's all the 'baggage', the in-fighting , backward cultural attitudes etc that will destroy our (up to now) relatively safe, peaceful and comfortable way of life.
Personally I'd be happy riding around in a horse and cart if it meant being able to keep our traditional, and compared to so many of these immigrants' home-countries...tranquil way of life, but too late now.
Even the Poles are demonstrating now and making demands. What's their problem ? Lots in my village. They seem well-accepted.
Don't like it ? Go home.