why is this cat5e wire so cheap

Is there something different about this cat5e wire from homedepot that is making it so cheap.
http://www.homedepot.com/prel80/HDU...gories/Building & Remodeling&MID=9876&pos=p03

I don't know why 500ft of cat5e is only 40$ Should I get this I am wiring my house?

The link just brings you to the homepage just type this in search
Internet/Catalog # 162791
Store SKU# 190519
or type: 500 ft. Gray 24-4 Twisted Pair Gigabit Datacom Wire

by the way here are the specs that are on the site: 1000 megabits per second, ultra high-speed datacom wire. 16MBPS token ring. 155MBPS ATM. 100BASE-T. Wire Type: Datacom. Type: Category 5e

 

There is nothing inherently expensive about CAT5e cable, that price seems pretty normal. FYI, this is solid wire, which is used for behind the walls and static installations. Solid wire is best for fixed wiring, since it has much lower losses than stranded wire, however it's also more fragile. For the patch cables from the wall jack to the equipment, you'll want stranded cable.

 

Cat5e has shielded and unshielded. unshielded is cheaper but shielded is better if you are running near electric wires or florescent lites. Both can run from 10mbps to 1000mbps with the rite equipment.