Well both "Home Made Energy" and "Earth 4 Energy" claim a construction cost of under $200 and after doing some checking, this would appear to be fairly accurate.
The cost of a professional installation would be several thousand dollars. This makes the return on investment very quick using the home made energy or earth for energy system.
Which Is The Best Guide?
This is of course a matter of opinion. However, after going through both "Home Made Energy and "Earth4Energy" along with a couple of other imitators, here are my findings:
"Home Made Energy " is okay. It does show you what you need to do but to be honest it is written in fairly simple terms and is not really comprehensive. I did wonder if it was a poorly written copy of the far superior "Earth4Energy". "Earth4Energy" is well written; it is comprehensive and really does show you everything you need to complete your project. There is a DVD video as well as the digital e guide and even a blueprint and guide to making portable units suitable for camping or an RV for example.
Are They Worth The Purchase Price?
At the time of writing both guides can be purchased for around $47. I would have to say this is very good value for money. Even if you only replaced a small part of your energy requirements it would take very little time to recoup your investment.
Support
Both "Earth4Energy" and "Home Made Energy" offer full support via email along with a 60 day money back guarantee. (Excellent)