The Deaccession proceeds field records how much money the object was sold for or received when deaccessioned.
deaccession_proceeds is the field ID
Number field with 25 characters and 2 decimal places
Administration tab in the object cataloguing page
You can search on this field with:
For example, enter deaccession_proceeds:[100 TO 500] into the search field to find all deaccession proceeds between $100 - $500 (or your own local currency).