I have a heavy duty, UNIVERSAL XL CAMP COT, from Teton Sports, black, very sturdy, in great condition, 85" x 32" x 19", with original box. Though I've had it for a few years, I've only used it on a few occasions, mostly indoors, for myself briefly after a move before I bought my new bed, and for the occasional guest to use. I had intended it for use in a tent while car camping, but I did that just once. For whatever other reasons you might use it, it is great as a guest bed, and can be quickly and easily broken down and stored away after.
$35, for the cot, cash, as is condition (You can buy one new at Amazon right now for $130+tax and shipping)
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I also have a twin xl, 2" thick, soft, ALL NATURAL LATEX MATTRESS TOPPER in a stretchy all cotton zip up cover, in great condition, that lays perfectly over the top of the cot, just over each side rail, allowing me to use twin xl bedsheets if I wish, instead of a sleeping bag, and sleep very comfortably. The cover came pre-washed, so you can even use the washer (cold water) and dryer (Little or no heat), but it means you do not have to use a mattress protector if you don't wish to, for maximum coolness and breathability. And of course you can put the latex topper on the floor instead of on the cot if you need two spots for guests to sleep.
$45, for the topper and cover, cash, as is condition (You can buy the topper new online for $170, with no cover, $240 with the cover)
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$75, for all, the cot, the topper, and its cover, and I'll throw in a nice, twin xl blanket for free.