Well , e books (most of them) exists on internet for free (rapidshare , torrents...). The only way to pay for an e book is when you have money back option - cause there are too many frauds . By the way , there are so many blogs , instructables on the net in detail of making the e bikes , with pictures , videos (and some include detail list of everything that was purchased with prices at the time) and only thing you have to do is - Google.
However , I believe that knowledge should be for free anyway and it is funny to see how people's mind works - that guy wants to cover expenses of building the bike by selling an e book for 47$ ?! What would be the cost of that book if he invented anti-gravity machine ? Deacon ( and few others ) posted in detail how he has done something on the bikes he built(for free), on this forum (with pics), so it's much better than e book ( + you can pop the question here, if something isn't clear and the builder & forum community will answer). And , there are other forums. Makes me very angry when I see something like this.
BTW , performance e bikes are a bit on heavy side - the one I posted before (excess 60 mph) is around 70 lbs. You can make it lighter , but with very exotic components and than the price goes into NASA territory.
