Your link does not work.
http://www.tigerdirect.com/applicati...?EdpNo=8203559
For $18 you could buy one, test it and report back. Probably works fine. It's an import copy of some existing design, I would guess. The two-bay Eagle Aspen is similar, but fewer elements, and is said to work well. Supposedly the E-A is a copy of the Antennas Direct DB2.
Since this product competes on price, I would be very critical of the materials and assembly quality. I think it's clear what it is - a cheap-as-possible copy of an existing design. No R&D costs and no support.
Realize that digital TV does not give you much feedback about recieved signals. Either the channel is received perfectly, or it's simply missing ... typically. Do you have a way to measure received signal strength and quality?