| think that a poor endpin can affect the sound of your bass in a negative way, so skimping on this is not a good idea.
When I bought my current bass, there was an annoying rattle when you played certain notes.
My teacher listened and identified that it was down to the cheap endpin - i got it changed by a luthier to a high-quality carbon fibre endpin and the rattle went and the sound of the bass improved dramatically!
