I have been down the depreciation road and they wanted to due that to the tune of about 3 k outa my pocket,, no way. I had a talk with the adjuster and they waived it. I told him I didnt buy anything that wasnt below market value or that wouldnt appreciate. If you would have bought a SnapOn wrench set 20 yrs ago cash even at list price, left it in the box today it would be worth,,, probably as good as the stock market or CD's anyway. If you got a discount when you bought it,, well you did pretty well over they years without opening a tool box? If its insured for replacement it dont matter what I paid for it. An accountant could figure this out, buy a closet full of new snappy wrenches, bargain for the price, put them away, could you make a return on resale???