Obtaining an Egyptian visa from Greece is a very straightforward procedure, however, the cost of the visa varies based on a few criteria. However, these fees may have changed since the time of writing, so it's always best to check with the Egypt Visa Fees for the most up-to-date information.
It's also worth mentioning that the cost of the visa varies based on your country, length of stay, and purpose of travel. For example, if you want to stay in Egypt for an extended amount of time or are coming for business rather than pleasure, you may need to apply for a different form of visa, which may be more expensive.
In addition to the visa price, you may be charged extra expenses such as processing or courier fees if you want to have your visa sent to you. Again, verify with the embassy or Egypt Immigration Services for the latest information on all fees and charges.