How much does this cost to the nearest dollar?

ECLV Sofa Couches Bed Functional Futon Hinge Hardware Sofa Converted into Bed
With this mechanism hardware, you can hide the sofa bed frame under your sofa,if you wanna turn your sofa into a bed,simply pull out the bed frame and lift the frame up till the level is the same as sofa, and then press the bed frame down, now your sofa is a bed.Specifications Folding length 23''. Lift top length 10'' . Bottom length 20 3/4''. Lift Height 11'', Lift level height 8 3/4 '' . Package included 2 x Sofa Bed Hinges Black finished,sold in pair Can be converted from sofa into a bed Heavy duty steel Perfect for sofa and bed designer or DIY projects Mounting hardware and

Price is $51.00

Price: $50.95