Why did you replace your truck with only 93K miles? I'm still truckin' with my Toyota Tacoma with 125K, it's now my daily driver along with being my game hauler. I'd watch Craigslist for a few weeks, if you are in a big metro area you should be able to pick one up used for less.
I got one that was a perfect color match for my truck for $300 used. But a few years ago didn't strap in an arcade game on a short trip and sure enough, it slid and went through the back window of the camper. I've been going without ever since, I wrap in plastic wrap, then a tarp and straps if it's raining. Never have a problem, but I also usually avoid moving games in the rain.