I have to admit, maybe it's my conscience, but these products can't really live up to their description. After taking a few turns in a pipe I don't think you'll find that water changes all that much, let alone becoming "alive".
These products were made to make money. While there are some facts on the web page, there is also a lot of baloney.
The simplest base model is $798 USD for a 6-8" (yes inches...hahaha) piece of 1/2" copper tube with three small bends in it. Do a few bends in a pipe add oxygen to the water? No. If this were so, the water would already be quite alive, as the water pipes take a lot of turns in getting to your house and out your tap.
Bent pipes are not going to magically up the oxygen concentration by 20%. Oh heck, the tube has a helix down the middle of the tube. You get spinny water.
When you think about it, your water is going to gain a lot more oxygen concentration coming out your shower head and falling through the air than it will travelling through any enclosed bent pipe.
