We're not gouging on the fluid price, and do have it in stock and can ship same day. It is the same as the Vortech V3 supercharger fluid, as that's what the head unit is.
To be honest, we wouldn't have relabeled it, but when we ordered our stock, Vortech was in fact out of labels, so we produced our own.
No shell game here, you just need Vortech V3 specific (which is what the labeled STILLEN) fluid, the fluid designed for the supercharger.
$30.95 / 3-pack
STILLEN : STILLEN 370Z / G37 Intercooled Supercharger System