The Sale Price (MRP) changes frequently and you have old MRP stock and changed  MRP stock. You need to create a new SKU each time or change the SKU master to new price.

This way you create unnecessary SKUs master and this leads to confusion.

FusionRetail handled this efficiently

• You can use System Generated barcode to identify the correct lot instead of UPC/EAN which is same for all the lots.
• If you wish to use UPC/EAN the system will ask you to select from the list of available lots at POS
• Still you do not want this – you can use FIFO to avoid asking.