[WaifuApple]

Admittedly, I find myself having trouble trying to deal with the upgrade requirements of 10*s in comparison to other stars, with the difference in power between them and other stuff not always being significant enough to justify that. Perhaps there's some alternate way of doing this than just flat out lowering the price, though, like using additional rare metals in the upgrade to bring the price down. This is just me thinking out loud, though.