As I said in the original post. There is no way that this particular "consequence" makes sense, whether you look at it from a gameplay perspective, or story perspective.
It’s also not an actual choice for a huge number of players, because they don’t know about the exclusive cyberwear when they make the call to kill him. He offers you a discount. He doesn’t say “Don’t kill me! I have these two exclusive cyberwear you can’t get anywhere else!”
The problem I have with the 'consequences of your action' philosophy here is that there really is no reason (beyond roleplaying the good guy) NOT to take the discount. It's not like there's a consequence if you choose to take him up on his offer.
Indeed, there should have been a consequence for your sparing the Ripperdoc and accepting the discount. For example, later a character you like or need is killed by a gang specifically to be sold to that ripperdoc.
But I do think that was a deliberate choice, because in the Cyberpunk world choosing to be a selfish immoral bastard is all upside and there are no consequences (until someone hires V to come kill you).