There are flights from East Midlands to Geneva for £96 return. They are pretty good times too, maybe get an extra 1/2 day skiing
Bens buses do Transfers for £71
Apartments are available(quite a choice) from just £472.
Ski pass is £259.
This comes to a total of £544. To add to that, you will either need to hire ski's and boots(as I will), or bring your own. If you bring your own, there will be supplement for flight no doubt. I've done this kind of thing quite a bit, and tend to make my own breakfast, but then eat out in the evening. It still makes a great holiday, at a great price.
I've looked at apartmets that will sleep 4, but if more were interested, there may be larger appartments available.