OK we got into missunderstanding. 150 euros is the price of diving.
As the tips are concerned - usually it's not more than 2, 3 Egyptian Pounds. Plus I always give extra tip for the boat staff at the end of diving week - mine rate is 10- 15 Euro.
Sharm el Sheikh and the whole Sinai Penisula belongs to Egypt, was given back in 1979 by Isreal as the result of Camp David agreement that was signed in 1978.
Yes, I think Sharm is much better for diving that Hurghada reefs are more interesting.
Temp in June - air - 86-96F, water 77F up to 82 on the surface.
Hope now everything is clear.
BTW currency rates changed a bit.
1 US $ = 7 Egyptian pounds
1 Euro = 8,2 Egyptian pounds
If I still can help - do not hesitate asking
Mania