Hi,
In Cairo for someone who works for en egyptian company who has a good level of education and in a clerical role would be around 350 EGP to 900 EGP. Some companies also pay into a small pension plan for there staff. I have friends who work with Vodaphone as Sales manager who takes 2500EGP per month, very good salary.
International companies tend to pay more and also have benefits, maybe health care, egyptians working in these companies could get between 1000egp to 3000 egp.
The company who work for pays 1300egp for call centre staff and finace controller takes 7000egp per month.
As an expat working, International companies tend to employee from the country you came from, with the package already assigned. Getting work as an expat in egypt, companies have to get you a work visa which can be difficult as egyptians have to be the priority, unless you have expectional expertise in a special area.
In tourist areas, people who work as waiters, bar work, entertainment, get a salary of around 200 egp to 600 egp and then rely on tips to make extra, or they get meals/accomodation included. Expats working in this area normally dont have work permits and are working ilegally, unless employed by an internaltional hotel etc from abroad. Salaries can range from 300egp permonth to 2000egp.
Hope this gives you some insight.

However remember, that egyptians now how to shop, go to markets, speak arabic and have little chance of paying over the odds, so unless as an expat your arabic is good, you have no problem shopping at markets, you can live well. Keep away from the metro/carefour etc supermarkets, you can spen 1/2 of your salary in food for the week there, where as half of your salary at the markets can last the month for food.