In the motorcycle high performance modification business we have a saying...
Your finished bike can be good, fast or cheap...pick two because you cant have all three !
Its either going to be good and fast (not going to be cheap), good and cheap (not so fast) or cheap and fast (not good).
I'm not so sure the same don't apply to e juice ???
"Cheap" and "Inexpensive" are two different categories. I don't have as much juice savvy as some of the good folks here, and I've only sampled juices from about ten vendors so far (with more on the way all the time, lol).
I'm not gonna single out any particular vendors, but I've found that some juices are kinda one-dimensional, but still good. No overtones, no undertones, no bloom, nothing but one flavor, but it's still done well.
Some have complex flavors, but still taste (to me, at least) like barbecued buzzard .....
Important thing is to find what you like and NOT SMOKE! (lol)