The car service was for two people. Not sure how many more could have traveled for that price. We were in nice Mercedes Vans, so plenty more room.

As for the value... For us it was value for money. My spouse would not have tolerated any challenges. This was the start of a three week trip, mostly in the Balkans, so we had much more ahead. The service is expensive. But for me it was value to manage down challenges and keep a happy spouse. It also made for a happy rest of the trip.