£400 or £10 ?

Need a remote shutter release to control the 2 cameras simultaneously.
Here's one way - using stereo headphone connectors to splice together 2 cable shutter releases:  http://vimeo.com/6404815
Decide instead to purchase radio controlled release. But which one? Canon RRP £400 or Yongnuo £10 ?
After thinking for a nanosecond or two I made my decision and bought 2 Yongnuo 128's from ebay.

Only hope it works. (i.e. that one remote will control 2 receivers to operate both shutters simultaneously).
Tried to find out by reading the instructions. Here are some excerpts:

Pretty shape - filled the smoothly modern feeling design, it's the best commune with machine

Okay so it looks nice

Pretty shape, it has the decoration function modern modelling, facile exquisite, whole set only like palm size, facilitates to carry.

So it looks nice and it's small - but can one transmitter control 2 receivers? I think the answer may lie in here but I can't be sure...

Because of the muti-wraps wireless will simultaneously use will have based on this the mutual influence, therefore the launcher and the receiver have established four digit switch codes, can avoid in the certain extent the disturbance. when the use group racket function, need transmitter's digit code switch to establish completely only as loon, then all receivers implements the active control to the region, realizes to camera focusing, the shutter and the B mode control.
 
Almost worth buying just for the Chinglish!