That opening front window only cost about $350 in 2003, but in 2004 cost an additional $4000, when left open during our Ford’s Terror inlet entry mishap in water damage to cameras, notebook computer ect. One needs to consider when to have it open or closed. I imagine the cost to install would be considerably more than $350 now, as in 2016, the front port side window was broken in the Yukon on the road trip to Skagway, Alaska, when replaced with auto safety glass in Juneau it cost $500.
Jay