You'd think there'd be at least ONE question with a simple answer, wouldn't you?
The IVF procedure is more expensive. But, it has a higher
pregnancy rate, and it might involve less travel. 2 IVF's might
be cheaper than 3 or 4 IUI's.
Then again there are other reasons not to want to do IVF, such as
having leftover embryos, subjecting yourself to fertility drugs, etc.