In QR Batch, the price of each QR Code changes above ten QR Codes. That means the price of each QR Code upto ten QR Codes is fixed ($ 0.5/QR Code).
For example—say you want to create 50 QR Codes.
The price for 50 QR Codes will be = price of ten QR Codes ($ 0.5 x 10) + price of forty QR Codes (wherein each QR Code will cost you between $ 0.4727-0.2300).
To know the exact price of each QR Code, you can use QR Batch Price Calculator.