Jason, if you do it yourself, it costs you nothing (that's what I meant). That does require finding someone that will loan you the scales. But, if you don't want to do it yourself, and would like to know whether it was done by the previous owner, or just happens to be accurate, then a few bucks will answer that for you ($50 to $75, maybe even less). Depending on those numbers you can then make a decision as to whether or not you want to pay someone to adjust it for you. That's all I meant.