Expect a standard, twin-size rollaway bed to set you back about $150 to $300. If you already have an air mattress or cot and simply need a frame, a folding bed frame will cost you around $65 to $165.

I’ve since bought two of the same twin-size folding mattresses, the 4-inch Best Choice Products tri-folds, for guests at my home. A comfortable guest-bed alternative Best Choice Products 4in ...

Shoppers say the memory foam mattress is 'so comfortable,' they sleep like a baby on it — save nearly 40%.

Plus, the versatile pop-up mechanism gives you the option to use it as two twin beds (side-by-side or overlapping), or add a king-size mattress. Crate & Kids Jenny Lind Spindle Bed with Trundle $1,498 ...