I have one of these. Put a roll of film through it, and the results are promising. I think it will be a great camera to take to out for little, unobtrusive street pictures. I can scale focus reasonably well, it seems.
It has a nasty light leak though. I could send it off to someone to get a CLA, but it seems a bit silly for a camera that cost £5, and apart from a duff exposure counter and the light seals it's all working pretty well.
Is it really as easy to do as the guides say it is? And is there another source of foam than eBay? Most of the sellers of the kits appear to be US based.