It's going to cost as much as you are both prepared to spend. If you want to take the cheap option, shop around and cut out chit you don't absolutely need. If you have an unlimited budget, go nuts....
It doesn't matter how much you shove it down peoples throats fatty, no one finds you attractive. Stop projecting your insecurities onto normal people of a healthy weight range.
If your life is chit it's because you have let it become that way. Only you can change that. Stop procastinating and go and find something that makes your life happy and fulfilling.