The official ANA Aeroportos Airport guide for Winter 2011, quotes between €49.00 and €68.00 for a SIX seater taxi between Faro Airport and Albufeira
dependent on time of day/night/weekend. There may be extra for charges.
You may find a pre-booked private transfer a better bet.
Here are some links to be going on with:
http://www.low-cost-transfers.com/faro-airport/
http://www.algarve-365.com/airport_transfers.html
http://www.polotur.com/
http://www.sul-travel.com/en/
http://www.bravotur.com/
