6 people would cost approx $60-70 total for a cab...the city bus also goes out there, the website will give you an actual route, complete with times, locations, transfers, etc. and costs about $3-4 per person. (I use it all the time when i go on trips) They're building a sky-train link to the airport but it won't be done for several years! have fun, good luck.
www.translink.bc.ca