IMO: The seller should plainly and conspicuously note exactly what the buyer is getting; a box, an F90, harnasses, etc. If that information isn't noted, the buyer should ask specific questions. I _hate_ shady eBay sellers that don't openly come out and say, for example, that the unit is missing the antenna or something else. But, if the seller doesn't know exactly what comes with the unit and states, again plainly and conspicuously, "the unit is as-is and I don't know what else goes with it, what is pictured is exactly what comes with it" then the buyer is responsible. Price is not a determining factor because there are some great deals that come with everything sometimes cheaper than items missing parts.