The more paid the more detailed it will be.
Sb-$44 Flatcolor. The more paid the more details added to the flatcolor, the SB being the simplest it can get. Single character
$45-60 Fullcolor with shading. Follows the same rules as the flatcolor detailing. Single character
$60-100 Simple background and absolute full shading and detail. The more paid the more detailed the background will be, $100 being the most detailed.
AB- Fullshaded with background, 2 characters with full details allowed.

Art examples here https://portfolio.commishes.com/user/Havoxious/