What is also interesting is that this guy keeps coming to the DIY yet continues to bash the DIY. Really!
Profit is one thing, gouging is entirely another.
Lucky for us we can go to the source directly.
Also be a bit leery because many times when he mentions something others run out and get the item before its been tested to see if it will work like you want and to see if it may last. If the item proves to be a good alternative then buy direct from Alibaba. Buy through one middle company vs going through a few and paying out your ass.
AC PDF - http://greenev.zapto.org/PDF/DCAC.pdf