Any idea how much the average price ranges around, without dividing the cost? Around 5 hour long charter time, 45 minute drive each way. They have quotes on their sites but I'm afraid to give my number :-P

I imagine it would be cheaper to borrow a bunch of cars from people you know.

See, it a situation like this, you call the charter companies and ask them how much it would cost.

Indeed. When I had to do that once, I called a good number of companies. Their offers varied easily enought to make a decision. And it's also good to keep in mind their vehicles may differ. With only 45 mins each way, you probably wouldn't need the best and biggest 5 star bus for the trip, as that would most probably cost needles extra (although it's your money). And I suppose the backlog of orders the company happens to have during that time might also affect their offer (a thing not necessarily evident when looking at possible listed prices over the net).