Here is something similar from Yakima.
http://www.yakima.com/racks/bike-racks/product/8001117/blockhead.aspx
Thanks!Some are called "Bike Tite's"
The one pictured is not a bike tight, unless it's really old and one of their first versions. Most of there's say bike tight on them and have a much different design. I think the version you have is made by Rhode Gear. I would say it's not worth more than $10.