For a standard size stone (stone blocks from the Giza quarries) a stonemason needed about 4 to 5 hours with good tools. For a casing stone (from the Tura quarries) about 8-10 hours, for a corner stone probably more like 10-12 hours. To process the 500 stones daily about 300 stonemasons were needed and as much helpers.
It's possible to build a sliding barn door for the cost of the lumber, but there's still the expense of buying the track system ($100-$2,000, depending on weight capacity, materials, size and style). DoItYourself.com provides instructions for building a sliding barn door .
Shower doors have varying costs depending on manufacturer, type, and finish. In general, however, a typical sliding glass shower door can cost from $100.00 to $300.00, with another $200.00 to $300.00 for installation. Higher end doors such as frameless corner shower doors can run as high as $5,000.00 installed.