A jewellery shop does not need a faster barcode. It needs a bill that can stand next to a piece worth more than the month's rent, and a record of who was allowed to change the number.
What is different here
Volume is low and the rupees are not. The khata matters as much as the till, because a regular pays across visits. A discount on gold, typed in the open on the bill, is a decision. A discount that any staff login can apply with no one noticing is how a tray goes light. Permissions are the setup, more than the printer. Shift cash is the same idea at a lower price.
You may not want a public page full of prices, and you do not have to have one. The counter still needs the product, the weight or the piece, the price you actually charged, and a PAN on the bill if you issue one. VAT depends on your registration, not on how expensive the necklace looks. Check the threshold and the compulsory list in PAN bill vs VAT bill rather than copying another shop's invoice.
The machine can be a tablet that stays behind the counter. It does not need to face the street. Pasal Complete, at Rs 49,999 for the first year, is a tablet, an 80mm printer, a stand, rolls and a year of Pro, if you would rather not assemble it. The clothing shop version of this setup, which is the long one, is here.