Legend Cast Iron Multi Cooker Skillet Set

No experience with the brand. But somehow just the pictures make it look cheap and the sales pitch (description) is even worse. 1,000 plus years of proven performance? The pan the myth the legend-famous for lifelong durability. For being a 1,000 year old company it curiously doesn't even make it to the Wikipedia list of cast iron manufacturers.
Wikipedia link

It might be a perfectly good set, but it just seems like a factory somewhere trying to manufacture cheap cookware and push it on the unsuspecting public.

If I was buying I'd spend the extra dollar and get the Loge set that Magnusfide linked.

Be careful of Chinese iron. It can break, especially rattling around in your RV.
I like a Dutch Oven with 3 legs and a rim around the lid for cooking outside. It works for everything. You can cook on the lid. I have a pile of Lodge DOs and they never let me down. One is from my great uncle from the 1930s.

95 cents more you can get an identical combo cooker from Lodge.
Lodge Combo Cooker

I have no experience with that brand. The size of the skillets is about right for two. And it would work fine for baking in a oven. But as a camp oven? Not what I would want if I was limited to one. To bake, you need coals on top of the oven. Yes it is easy to put coals on top, but without the rim on the lid it is hard to take the lid off without seasoning the food with ash. If you get it I suggest some short pieces off black steel pipe to lay in the coals to keep pan from smothering the coals. And at least one light lid that will fit both.
If I was going to pick CI for 2 that would take about the same space, I would use a 10 inch camp oven, a skillet same diameter that the rimmed lid would fit, and a domed lid to fit both.
BTW, when I was very young my great grandmother always had a lid larger than the skillets she used hanging next to stove. My mother somehow set the grease in a skillet on fire. (Fireman will tell you this can burn the house if not handled right. In a RV???) Grandma just grabbed the lid. It was bigger than skillet, but she just shoved the fire back into the pan, and covered it with lid, and shut off burner. Cleanup? Dip some of the grease off, and finish cooking.

You’ll need a rack if you want to use it as a Dutch oven. Racks are cheap, easy to find.