Based on Rog's info I e-mailed John Copley. I found out the following about the 2 Synergy units.
The tubing and stone are included. So the regulator, funnels, catheter you need to buy somewhere else.
Of course you have to get your tank and oxygen.
The bigger unit, when you re-ozonate the ozone coming out of the first stage has a very high concentration. This is excellent for bagging/cupping/funneling/making your olive oil and water.
I read in old message for curezone members that in October you can get the bigger unit for $525, includes shipping and comes with a variable output. He confirmed this, just e-mail or call him.