Is buying online from a foreign website considered international use?

Generally, yes, from a card processing perspective, if the merchant or payment processor is outside Egypt, even if the price is displayed in Egyptian pounds.

Be aware of international usage fees, limits, and automatic renewals.

The figures, fees and limits in this answer vary by bank and change over time — confirm them with your bank or the official source before acting.

Source

• Central Bank of Egypt — Know Your Rights