Oil is essentially the crack of this industry and you shouldn't be buying it from any dispensary as they're simply not to be trusted. Unless you know for certain exactly how it was made, and what with, consider it suspect, and crap, with an inflated price.
I highly commend people like Greywolf and his tremendous contributions. He's done nothing but offered the highest quality of objective information, and anyone even remotely interested in it should make a full study of the available material there. It's simply unfortunate that for every one like him, there are a thousand more doing the exact opposite.
For example, 100 dollar a gram wax, that you only have thanks to the exploitation of your supposed "patients", or in other words exploiting them via the MMAR as its proudest useful idiot, isn't a fucking marketing prop for your viral hot box, while everybody loses their rights and liberty. Only assholes do that.
Trash products like "wax" are especially crap, as it's just crap that's been fucked with making it even crappier. Such a product should be laughed out of existence, if not for the pure ignorance of it alone.
In this single area of solvent based extractions there are truly good arguments to be made for having meaningful regulations in place, so that people actually stand a chance of getting a quality product for the absurd prices they have to pay, and isn't adulterated with some toxic shit. But when you can't even trust an LP to produce a quality bud, or find one that can, forget about concentrates.
For those who argue as if the cost is somehow justifiable based on shit like "risk"? What risk? The potential legal ramifications aren't even on the radar as much as the weed is itself. In terms of the potential physical risks of explosion? It's not my prerogative if your bs "compassion" club has no more intelligence than to take a "subliminator pipe bomb" from planetvape for a 100 bucks and 20 cans of butane in their basement. Those are risks that morons take as enabled by profiteering frauds, and quite frankly they're all a fucking blight to the cause. Whereas if they invested in the proper equipment to produce such a product reliably and responsibly, their risks and long term costs would be greatly reduced. No sense paying extra for the stupidity and short sightedness of others. At the end of the day, they're turning floor shake into $100/g gold, and pretending it's the same. Fuck em.