I'm looking more for USD to sP sort of conversions; I have an idea of what I want to charge in actual money, but I don't know how that would translate to sP.

For example; does $10 become 1,000 CSC and then around 36 mil? (Because that's an approximate amount that 1,000 CSC is going for). It just feels like so much sP XD

Yeah, that's about right. :O It does feel like a lot of sP indeed, but I mean the value of virtual currency when compared to real currency will always be significantly less, so it makes sense. -shrugs- I mean, you don't want to undercharge yourself, either, just because something seems like a lot.