I'm trying to sell my father's gently--I mean, RARELY USED tools to pay for his healthcare since he endured a major stroke. I've listed a DW871 14" chop saw with metal cutting blade that he might have used on two total small projects as the hobbyist he was. I have a guy arguing with me that this saw new, is $199.00 D28715. I argue that it is the one prior to the current DW872 that is $475 and I'm offering it for $300. I want to be fair. Is the D28715 identical to the DW871, just newer? What is a fair price?