We're currently a family of four living on a single income in an expensive city in the south east (not London) on a wage of £30k. We don't have expensive tastes, no car, fortunately we own our home outright, and we live simply but we are comfortable. We have four year old twins and one of them has a disability.
DH has unexpectedly been offered a job in NYC (Upper East Side) and our first instinct is that we would love to go, but we are concerned that although the money is better (not fully set yet but in the region of $90k and untaxed for the first two years) we know that NYC is an expensive place to live and we will have extra costs (especially health insurance, particularly because of our child's disability) which might make it a struggle.
There is also an element of 'we don't know what we don't know' and we would hate to be taken by surprise by costs when we got there and possibly have to go into debt or return to the UK.
Can anyone who has been in this situation please give advice? How much would health insurance cost? What other costs might we not have thought of? Is the cost of day to day living much higher in New York? Where do we start in making this decision?