Retail
Retail POS software
Barcode, shelf price, and a fast bill. POS at the counter. Sales tax on the invoice.
POS
The counter bill is the daily action. Categories keep the front, the shelf, and the offer separate.
Barcode
Scan the item. The rate on the bill is the shelf price.
Sales tax
Tax prints with the seller’s number. The return uses the same figures as the bill.
Print
A4, A5, or a thermal slip. The customer leaves with the bill, not a later rewrite.