The ZFX treats up to 16 ounces, that tiny vial will surely last you a while, only need to use ZFX once (garage queen) a year, twice (daily driver) a year, or whenever you want more than 1 coat per day.
Yes the Z1 hazes/dries that quickly, about 5-10 minutes for me in 80 degree temps and low humidity (20%.)
Its been a month or about a month since I bought my Z1, I am down to one and a half ounces (gave 3 oz. away in samples, used 3 and 1/2 ounces.) So I just bought another bottle of it from my Z distributer (picked up 12 applicator pads for a fellow autopian in trade.) I still have a unopened ZFX kit and I am sending my barely used ZFX vial over to Jngrbrdman for some testing (gosh thought the PO closed at 2PM, they closed at 1, package will be sent Monday.)
The Z1 is just so easy to use IMHO. Don't need to mix up the stuff, apply it in 20-30 minutes taking my time. Put on some Z2/Z5 and let dry for an hour or so. During this drying time you can be doing other stuff to your ride, cleaning the inside, dressing tires and wheel wells, polishing metal, then wah your hands grab somer towels and start removing Z (I use a 100% cotton towel to break Zaino, the MF to buff.) Only $9 a bottle too.