The raiser is called "Router Raizer" by Router Technologies. There are two models - for the TRC001, you want the 200. It costs $89.99 from PeachTree Woodworking. If you watch the sales fliers, you can get a $25% discount coupon and is what I did.
I own the pair and it workd excellent. Just finished my first project using the set-up. It raises and lowers like effortlessly.