I think I saw one on Craig'slist or somewhere for $250 that attaches to the kind of tent you want to get.Sweet! I'm leaning toward Tepui since they are in Santa Cruz. I can go to their facility and actually rent one for a weekend and test it out to see if I like it. I thought that was a neat feature. I also will need a custom annex to house the dogs at night, vs. leaving them in the back of the jeep or putting up a tent dedicated for them.