Pricing Options for return

Hi,

We have 3 options for returning an item

1. At the current price list value At the current price list value 2. At the price list value ruling on the date of the original order At the price list value ruling on the date of the original order 3. At the original price paid by customer At the original price paid by customer

I sold the item for 100, I want it to return by price 30

How can I achieve this?

Best regards

Vinod