Now that I think about it that is true. RV, boat and summer cottage are pretty much in same ballpark. From purchase price and maintenance. Not very cheap, but affordable. Also used boats keep their value and last for decades.

I've sold all my previous boats for more than I bought them. Once the boat is 30+ years old, price depends a lot on condition.

For example, I bought my second boat in some dude's backyard, in the middle of some major renovations the guy was too old to finish. I wrapped up all the critical stuff, sailed on it for 2 seasons with my family, and sold it in the water at a marina (meaning it was at least navigable; it wasn't when I bought it). If you only look at purchase price, I almost doubled it, but when you account for everything I spent to make it navigable, I'm probably close to even (especially if you count my labor).