1 On average, a sofa bed can cost anywhere from $150 for a lower end model to as high as $1,400 for a deluxe bed.2  The popular Handy Living CAC4 on Amazon retails for $360 to $450. 3  For instance, Target sells a variety of sofa beds that come in different designs, sizes, and functions. Type. 2  A pull-out sofa bed will usually be much more expensive than a futon. 3  Quality. 4  Some futons can be purchased for as low as $100, but the quality of the frame and mattress are not as high.
1 Diamonds of the same carat weight can vary in size. 2  For example, a one-carat round diamond could measure 5.9 mm in diameter, while another one-carat round diamond could be 6.5 mm wide. 3  Broader diamonds with larger millimeter measurements create greater visual impact.
While carat weight may indicate a diamondâs size, the shape and cut of a stone also play a large part in determining how large or small the stone appears. An elongated shape such as the Marquise cut may appear larger than a rounded shape such as the round brilliant even if the two stones share the same weight.Caratâ is the term used to refer to the weight of a diamond (not to be confused with the term âkaratâ referring the purity of gold). One carat is defined as one fifth of a gram or 200 milligrams, approximately the weight of a five pound note.