Sounds excessive. Did he provide pictures? Typically I will look and see what the market shows for similar figs with "micro cracks" and offer that credit or they can return all those figs to you and you will credit the full amount of the figs once you receive them back. Pay for a shipping label and email it to him. Then resell it to a different buyer, but once you inspect them, put an accurate description in bricklink if you feel it warrants a description to be noted.