The place I got the prices from in the states is OK, the planes are not new but they do. If you are doing an intensive bit of flying to build hours the cost of living in the US is cheaper than the UK. Spend two weeks away from home in the UK flying or go to Los Angeles for two weeks and even including the cost of flights I think you would be better off. It is not free to live in the UK and you will be away from work and home for a shorter period because the weather is better. If the place in the UK is close to home then it may be getting close to being worth staying in this country if you don't need that many more hours.