I think you know that nobody would use a KB shifter BEFORE they use an ebay one, maybe the other way around though.
I've never said that it is the same exact thing. I ASSUME that the KB will have tighter tolerances, OEM fit and finish and a perfect plug and play install and feel. That's what I would guess.
I wasn't sure I'd even like a shorter throw and lever (even kept the OEM knob to help raise the height) so I opted to try an ebay option. It needed some adjustment to get it to fit, as stated above, and I've gotten used to the feel of the shifter now.
Will I toss it and go buy a TWM? No, not unless it has a failure of some sort
Does it feel "amazing"? No, not amazing but it has no real negatives or downsides.
Will it last? Probably will. It's a bent bar of steel with a pivot ball. It is not under lots of stress and has no mechanical moving parts. I see no need for space shuttle technology on my shifter.
Did I get what I paid for? Yes. Don't you always (unless someone scams you)? I paid $ for a shifter lever, it works and I'll use it.
Do you get what you pay for with a TWM or KB? Yes. You pay $$$$$ for a shift lever, it works and you use it.
Would i do anything different? I'll probably mod my stock lever to extend the bottom to make it a short shifter with OEM fit and finish. That's what real mods were about back in the day, not fancy made up brand names to corner a market.