It is very interesting. Works a treat. Great for simple gaming to.
Anyway, the one on the link to eBay is a Chinese copy. They are made with inferior boards and come with a 1.4 chip not the 1.6. When you try to install Kitkat in it it will be bricked.
Only get from a proper uk seller with good feedback and then you can enjoy flashing different images on them with minimal risk.
Ps no I won't take 40 quid.