Mujitsu and Tairaku's Shakuhachi BBQ

Hello, my name is Chris, I am a complete novice, but just made my first Shaku today from the design here http://www.fides.dti.ne.jp/~sogawa/englishpagepvc.html

I was luckily able to get a nice clear D note from it ( according to the Syaku8 program) within a few minutes, but it does manage to hide from me more often than not. I am kind of shooting in the dark here as I've never seen an actual Shaku in person, and I don't know if my homemade version is up to par with a "real" professionally made model. Since I am in the US I had to convert all the metric sizes to our system of measure, and fudge the numbers a bit into fractions. I opted for making the holes smaller (3/8) than the 10-11 mm indicated. I guess once I get a clear D that I can count on, I can then work my way tuning the rest of the holes up the body of the flute.

This will be a fun journey learning to play this instrument.

My opening question, is there an inexpensive beginners shaku (pvc) available for @ $50 or less, that would be tested and ready to go. (playability is the key, not aesthetics).

Thanks, aloha,  and healthy lungs to all.