Regarding the build quality, I must warn you that the device is not built to a very solid finish. The plastic used on the cases are of cheap quality and may break (as in my case) if you do happen to drop it. The clamp that holds the receiver, and in turn the flash, is said to be built from anodized aluminum; however, I do have my doubts about the durability and do not wish to risk putting my flash on top of it. I always use a cold shoe adapter to fix the flash with my light stand and connect my wireless receiver with a PC sync chord.
That said, for the price of about $33 (shipping not included) one cannot expect great build quality out of the unit. Now, that price certainly may not sound cheap but if you compare it to higher end triggers like a Pocket Wizard or a Skylight, you'll see that it only costs a fraction and is certainly worth the price.
The Cactus Wireless Flash Trigger V2s is available from Gadget Infinity and shipped from Hong Kong.
PS: You might also note that at the time of this review a new version of the Wireless Trigger is available, and that there is also a free flash stand that is thrown in along with the above package of the V2s Model.