[MERGED PR] Starstone value reduction

[Jakson]

I'm not sure if I agree with this change, but it's already merged and probably gonna stay but I'll just voice my opinion. Starstone RNG was pretty balanced and made it pretty rare if your searching for it based off of RNG alone (which is what most miners and QM's do), and even when cargo becomes rich, QM's always enjoyed it, I've never seen a QM not be happy when I show them a starstone. When I play QM myself I also enjoy it, because you get to buy whatever you want, build your own bar in cargo, get a kitchen, build a singularity outside of cargo. It gave a lot of fun to the QM's, because most QM's don't enjoy waiting for a single trader to show up so they're forced to buy and sell jumpsuits or some other weak cash production.