Maybe someone from Egypt might be about if you want to know costs there.
Here in Australia you do not need to go to a solicitor for certifying document copies or statutory declarations.
If you have an original document and you want a copy certified, you can take that to a Justice of Peace or Commissioner of Affidavits and the service for witnessing the original and/or your Statutory Declaration and then they putting a stamp on and signing is free.
Many Post Masters, Bank Managers etc. have qualified/are appointed to do that or usually a Police Station will have a senior officer able to do it also.
If you need a document translated into English, that is something else for you need to get a qualified and registered translator to do it, then you take original, translation and copies to someone for certifying.