I have them on my bike, I am happy with them. The only drawback is going to easier gears in the rear is one gear at a time, instead of a big push to get 3 gears like on thumbshifters. Other than that I really like them.
Buy them here for $73 and I'm sure shipping is cheaper than trashbar also.
http://www.jensonusa.com/store/produ...60+Levers.aspx