2BILLION PER OKAY? >8D
Uh I mean.. don't price anything under 1mil, maybe go 1mil for the sketchiest of head sketches, 2mil for half body and 4 for fullbody?
Then on normal drawings up to 5mil on headshot, 8mil on halfbody and 12mil on fullbody.
Chibis maybe 6mil?
FF I love those dolls, so maybe between 8-10mil for those?
For the reference sheets I'd recommend charging per picture, say 10mil base price for a fullbody and a headshot, and +5mil for each picture, or something.
For the design umm (totally saw those on your dA before you joined Res fff) I'd guess anywhere within the range of 8mil-20mil depending on complexity.
For the pixels, 1mil for the tiny ones, up to 20mil on the large.