To a certain degree it is a matter of quality improvement overall, but to some extend it is mostly a matter of the consistency and quality control.
Meaning that with cheaper basses it tend to be more random weather you get a good instrument or not, though you can get lucky and get a true gem that with upgraded electronics and hardware might be just as good as any more expensive bass.
The price related to quality also tend to be a matter of which brands we are talking about.
I know for instance that Ibanez instruments generally have a really high quality compared to their price point.
Meaning that with cheaper basses it tend to be more random weather you get a good instrument or not, though you can get lucky and get a true gem that with upgraded electronics and hardware might be just as good as any more expensive bass.
The price related to quality also tend to be a matter of which brands we are talking about.
I know for instance that Ibanez instruments generally have a really high quality compared to their price point.
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