How much do office furniture and equipment cost?

Due to a huge range in offer and prices it is very difficult to calculate an average cost of office furniture and equipment. Instead, we used a few sources that offer a variety of choices.

Sources:
http://www.ikea.com/us/en/catalog/categories/rooms/workspace/
http://www.eofficedirect.com/
http://www.hp.com/
http://www.dell.com/
http://www.office.xerox.com/