Here is some info for you
There # is (818) 786-8325. The price for the DCI+ is 7. 15/bottle + s/h (16 ounces or four full treatments). I looked for my last receipt to make sure that is the right price but I couldn't find it, I think that's what it is.
To be honest I didn't really notice any MPG gains, but I continue to use the product becasue I feel it does what it is supposed to.
-Ryan