SB - $15
MB - $5
AB - $250

Bonuses:

$60+ - Small extra reference detail (scars, an open mouth, paw pads, etc.) + little design edits

$120+ - SFW Back view (can be without clothing) or SFW Front view without clothing (for both +35$) + Sketch halfbody artwork

$180+ - Add 2 emotion or 1 pose on the reference (for both +40$) + Commercial use!

$250 - A small 4-frame comic (each additional frame is $20-40 depending on complexity) + Any Alt. Form (pre-event version / younger version of the character / form the character can transform into/ alt. outfit/ etc.)