Everything in Dubai is designed to suck money out of you.
Grocery is the biggest part of your expenses. Things are not cheap in Dubai and it is getting worse with inflation.
DEWA (electricity and water if you move out of co. accommodation) - there is a hidden tax on top of utilities in there somewhere - I can't remember what it is called as I am in co. accommodation.
Etisalat - Telecommunications & Internet is the most expensive I have ever seen in the world for what you get in return.
just a few of the obvious ones.