I was a VPI dealer for many years. The bottle that comes with the unit is NOT concentrated. They also, at the time, sold a much larger bottle of non-concentrated fluid, (like a half gallon or gallon), but it became to much money to ship, so VPI went to a concentrate.
While the VPI fluid is okay, IMHO, the Audio Intelligent #6 fluid is better. I also like the L'Art Du Son concentrate.
YMMV...