Went to a few places. Seems that Challenger is the cheapest. Selling at $439 Member price and $449 at non member price. Most shops quoted $459 to $479.
Brother, as what u say, u are a photographer. Then u should also know that by doing this, u are spoiling the market and the rice bowls of many professional photographers. As far as I know, for general events, the rate for 4 to 5 hrs is abt $250 min.