What did it cost? This is a difficult and dangerous question to answer, since what you
buy depends on what you already own. Also, an exploratory project like these will always include
parts you buy but don't use. And the exact price of a part depends greatly on when and where
you purchased it.
Let me simply list everything I bought. You must adjust it yourself as you see fit. Your mileage will vary.
following list tracks most total and actual expenses. Please see the Parts
List web page for the essential ingredients. We cannot always know in advance how an experiment
will turn out, and some items shown were purchased but not actually used. The
“installed” column indicates the price of items that became part of the finished