Hi Salaly,
We do have a decent saltwater store and few stores that will sometimes ship stuff on demand... however it's a bit overpriced and you have to wait weeks and months to get basic things. You will find a nice variety of fish and soft corals here, LPS are sometimes available, SPS are very very hard to find, That's why I buy most of my stuff when I'm on travel...
Where in Saudi are you? I travel very frequently to Saudi, was supposed to be in Jeddah Next week but it got rescheduled till 5th of Dec.