Order away. Just know that you're going to need to do a little sourcing and soldering 
The 2.5 microfarad motor run capacitors that are used in the Sonof iFan02 need to be replaced or the medium and low speeds will be way too slow. Different fans have different run capacitors in them, so if you want to be precise, then you'll need to pull your fan apart to see what sizes are used in it. Otherwise, you'll probably be fine with a similar 4.5 and 4 microfarad capacitor shown in this post.
In the photo below, one of the 2.5 microfarad capacitors is for the slow speed, and the other is combined with the first for the medium speed. You just have to unsolder them and then solder in the wires from a dual North American fan motor capacitor, or if you have enough room in the fan canopy, you can use two separate capacitors and route their wires from the board to the outside of the controller housing.
Here's two 4 microfarad capacitors for $2.30 and free shipping. Order them at the same time at the iFan02 and have them race from China to your house 
[Edit] I'm in no rush to make this work. Already have a manual fan control on the wall and Autumn is right around the corner, so I'm going to follow my own lead and order just two 4uF capacitors to see how it goes.
