I'm selling speakers for the first time and concerned about fraud

I have a situation at the moment where I bought a subwoofer on ebay. The seller described that the subwoofer was in "perfect In perfect working condition and sounds great. It has some cosmetic wear" but neglected to mention that it was missing a cable that is not an off-the-shelf item, is unique to the system and without which the subwoofer does not perform in "perfect In perfect working condition". The manufacturer no longer makes the sub or the cable.

It also had a small tear in the surround, which I was not as concerned about, as it is repairable, but that tear was not mentioned in the listing and only shows up in his photo if you blow it up 200% and then only if you know to look for it. There is an anomaly in the image that is near the tear in the surround that suggests that someone was trying to retouch it out but did not know what they were doing and not only did a sloppy job, but missed the spot.

I am disputing the transaction. Would you consider the description fraudulent? Thx to all beforehand for your responses.

Yes. I would think so. Just for the missing cable alone. I'm quite sure this guy knew that sub needed the cable in question.

It's a big problem that there's really no safe way to do it.  You just have to rely on the buyer being a good person and the only way you can get an inkling of that is based upon feedback but that's no guarantee.  For very high value items, the only real safe thing to do is to trade it in to a local dealer but that means you have to find a dealer willing to take it, get less than you could get privately and buy something from that dealer.