He who is Scott Dorsey said on 5 Dec 2017 14:14:38 -0500:

Whereas you can get generic 6x9s from Parts Express for around $5 each,
for a total of $20 the set, and they probably won't be any worse than the
originals.

Price is never an indication of quality - it's just an indication of what
other people are willing to pay - which - marketing knows - is highly
influenced by marketing garbage.

So, a 6x9" 20W $5 Parts Express speaker might or might not be as good as a
6x9" 20W $300 speaker at Toyota which itself might or might not be as good
as a 6x9" 20W $25 speaker at Crutchfields.

How are we to know?
Sure, in the days of yore, we pored over those 3db power:frequency curves,
from 7KHz to 20KHz on each speaker box, and where, folks like Jeff
Liebermann would know, they always find a way to lie a little bit.

While I doubt the $300 per speaker at Toyota is a fair price, how can I
tell, a priori, if the $5 speaker at Parts Express will be as good (or bad)
as the $25 speaker at Crutchfields?

Is there any way for a consumer to make an intelligent speaker decision?