Hello all, I am new to this forum! I am looking into buying a DOD LS430W unit, used, seller told me about an hour or so of utility…Says he has the invoice from a reputable ONLINE retailer here in Canada…I have not seen the unit yet…he is asking $140 for it. Has box and all accessories…looks also brand new, as per his comments. Now, my questions are pretty straight forward, 1- is there a way to know if it's a fake unit? 2- Is the price good? 3- is there a way to know of the actual time of operation/usage ? Any input would be appreciated greatly…thanks all!