Yes, oil and water soluble. Obviously you don't vape the oils, hell someone on here was sent a paste. So be careful, always best to put a few drops in a shot glass of water. There is a thread on these.
Yeah, when you mix these youd need max kyj to your nether orifi if you were to pay that price. But it is a very large bottle. They are perhaps between tpa and cap on strength. That said, I don't know anyone that did not get them as samples. Again, the contact info, if still active, is in that thread which I would link you to were I not, as always, on a phone. They were releasing several new WS concentrates after I called I was told.
I think they are pretty much testing the market. If all their flavors were like that Jasmine...they might be worth the money even. But if I paid $60 for that guanabana...I would have been irate.
Edit: some are as weak as VG RF. (10-12%)