I have received both sets now, and had a quick play with the single set-up tonight. The kit is as described in the ad, and comes with two-page instructions in colour - very comprehensive.
So, what was it like? The burner itself is a twin-walled open body sideburner, and works very well indeed. The enamel mug boils its 500ml quickly when its just rested on top of the burner. The windshield is very effective, and a brilliant use of foster tin bodies. Comes with loads of sheets (well, 4!) and is enough to go around any pans you're likely to carry. The pan support - made of chicken-wire, or somesuch, works well and easily supported a pan with 1.5 litres in it. The fuel bottle is, I'm guessing, a Shoot fruit-juice bottle - and again has been labelled as fuel. I've used these before for meths storage, and never had any problems with them. The alcohol measuring cup looks like a recycled medicine measuring cup, and does its job. The tin can that acts as a container and pot is a tin-can, and the handles hold the mug and other contents firmly in place.
Downsides? Well, the paperclips you use to hold the windshield together could be larger. And the windshield itself has sharp edges, so beware. (Although to be fair, the instructions warn you about that). Everything else does what it says on the can, and is as fast of any of my other alcohol cookers to boil 500cc of water. Surprisingly, if you put the windshield close to the burner where the cut-out for the mug handle is, the handle doesn't get red-hot and I found I could pick it up quite easily after it had boiled.
Conclusions? Well, they must be doing this for the fun of putting together nice little cook-sets, because there must be precious little profit in it for them, even ignoring the time they spend on it. It would work with much bigger pans too, as the windshield is expandable and the pan-stand is quite wide (and could be opened out wider if necessary). Even the postage is reasonable, and they gave me a postage discount as I bought the mess-tin set as well (more on this kit when I get a chance to try it out)
For the back-packer, or novice, it would be a really good piece of kit, especially considering the price and the completeness of the kit. For anyone else, its worth 6 quid just to have a play! It lacks the solidity and flexibility of the Swedish Army Trangia set - surely the best bargain in the camping/bushcrafting world at around 10 pounds delivered, but then again, its much lighter, and for many that's important.