Sketches: $10
Colored Sketch: $15
Lineart: $20
Flat Color: $25
Simple Shading: $35
Complex Shading: $40
Backgrounds: + $15 to any of the above
Reference Sheets: $65+ (includes front/back view, alt version(for example if the character is anthro, I can add a feral version if desired), any major details
that need to be shown in the sheet, etc. adding text is free of charge)

Icons: $5
Busts: $15+

The price may go up depending on the complexity of the character, such as wings/multiple limbs etc, usually
starting at $5

YES. I do 18+ artwork sometimes.
Flatcolor with Two Characters: $35
Shaded with Two Characters: $55
Extra characters: $25