Looking at the design and having never seen one in the flesh, I'd give it a miss.
Lots of pivot points with lots of rivets and fiddly little clips = lots of potential points of failure.
I have had a few cheap chairs of similar construction and they never have a long life, camp sites are littered with them too, so I don't think I'm the only one.
Have a look at something like this: It might take a bit longer to set up, but they are a lot more heavy duty and are basically what the military gets issued these days. 5000 soldiers and 10000 asylum seekers sleeping on them can't be wrong.
I bought a swag off these guys, it was good quality and shipped in super quick time.
http://www.campingcentral.com.au/oztrail-jumbo-aluminium-stretcher-bed-210-x-80cm/