If clients are planning to drive throughout the country, it can be a good idea to use a company that has a few offices in case they need a replacement car. Prices vary dramatically and shopping around is recommended. July and August prices are substantially higher than the rest of the year. It is not permitted to take hired vehicles into Sinai or over the border into Jordan. All cars are fully insured.
Fares are negotiable.
West Bank blue and green license plates are not permitted to enter Jerusalem. If the driver declines it is easy to transfer to a Palestinian taxi at the checkpoints. An inexpensive alternative are Service Taxis. These are usually stretch Mercedes seating up to seven passengers, or little Ford vans, which operate on a fixed route for a fixed price just like the public bus. If uncertain about the fare, just ask fellow passengers.