Definitely not. Some of the worst juice I've had is the most expensive. That's my opinion on their taste though.
The larger a company gets the cheaper it becomes to produce. Some of the largest companies have the cheapest juices (Dekang & Mt. Baker for example).
IMO the premium juices that cost $25 for a 15ml bottle are that expensive because they have $8 in the packaging and bottle.
They also limit the size you can purchase to 15-30ml max (raising the price pre ml).
I like bombies (which is premium-ish) because they offer 120ml and 500 ml bottles on their website for a discount over smaller bottles.
UHhhh..I have a question

?
Ive always wondered how people manage to consume those bigger bottles of ejuice before they go bad ?
You mention a 500ML bottle.
Im a pretty heavy chain vaper, around 6ML+ a day, but I always have trouble getting thru the 120ml bottles, they usually turn very dark and yucky with a slightly nasty after taste before I have time to finish them !
Then again, I use mostly heavy VG sweet-ish juices,maybe its not so much of a prob on clear mainly pG liquids...?
Also, though I have a fave ADV which I use most of the time, I DO have a few alternative flavors going too at the same time ,maybe if you use only ONE juice all day then it's feasable enough to purchase your liquids in the bigger 120 or even 500ml sizes ?
Or do you keep them in the fridge or something ?
Sorry for cutting in to your thread OP....it was a spontaneous reaction

...i just HAD to ask ...?