The benefits you get really do vary from employer to employer, and whether
you get a full expat package.
Full expat packages usually include all sorts of goodies such as schooling
in an international school (the fees of which are more often than not as high
as the rent, which on an expat package your company may be paying in any case), medical insurance, and moving costs
from and back to your home country.
Negotiate as much as you can!