My guess is the photo is from Australia. The load on the roof implies it, and it kind of looks like Inskip Point, getting onto the Fraser Island ferry.
I could be way off and it's somewhere completely different. But it's a memorable vibe and part of the world I obv won't forget.
They're saying that people who are buying these sorts of vehicles on Craigslist would pay so much more money for such a simple addition. It's kind of like how people in the early 2000's would add a rear wing to their car and call it a sports car; if you add a snorkel, it's now a off-road vehicle and worth much more in those peoples eyes.