Gene, those Chariot ones look interesting.
Yeah, the ones I found are expensive. The Car-Go Lite Xtreme, I saw online for over $11K "as equipped". The only way that makes any sense for DW and I is if it lets up spend a snowbird winter doing a lot of extra things, without needed to sell the TL and buy a bigger RV. And in that case, it would definitely make sense. But a more basic trailer could serve the same purpose.
If I can come across a dinky affordable popup, there is a good chance I'd buy it to see what we could do with it. As you said, it's not likely to go down in value.
EDIT to add:
We talked about this a bit last night. We'd want something that has 6' of interior height, if possible. But something that can easily be moved off to the side of a site by hand. So it really seems like we should be looking at a tent (which we just ordered), or a very tiny trailer that expands with a tent. Sort of like a camp kitchen or motorcycle trailer. This is a long term idea for us to work on.