Basic N95 masks are currently around 20 for $10 on Amazon.com. More for nicer ones with the exhaust valve. Selling briskly. Got mine ordered. If it happens, good luck getting them locally.
Maks will be useless. Ebola is not airborne unless you get sprayed with the body fluid from an infected person. It is not transmitted by air. the best protection is disposable gloves and learning to remove them without touching them Same goes for your clothing. Practice removing your clothing without touching an outside surface.
If Ebola comes to your community, disposable suits would be a smart investment.