Garments
Garments billing software
Size and colour on the piece. POS at the counter. A wholesale rate when the buyer is a shop.

Size
Men, women, kids, and unstitched stay in their own categories. Size is a field on the item.
POS
The counter bill moves stock. More than one store room is available.
Wholesale
A second rate for a shop that buys to resell.
Sales tax
Tax prints on the invoice. Check the size before the customer leaves.