What does it mean to make up the money manually to shoot the price change?

Hand-made replenishment: after making an appointment for a new version or reprint, the buyer will be informed to make up the balance after the sales arrive.

Take a photo and change the price: it means to give you a discount. Is it difficult to change higher and higher? Anyway, if the price after the change is higher than the marked price, and you don't know it, it is cheated [generally not]