Let me add a different thought on feedback. I have sold items over Ebay a little, and one thing as a seller on Ebay that is most important, is maintaining a Excellent feedback record. If I have a buyer that isn't happy with what I sold them, or they claim that the product didn't come as described, I'll work with them to make them happy. Including taking the item back and refunding them the cost. I can't afford to have a poor rating. It took me long enough to get my power rating up.
So, if you purchased something and what arrived didn't match, or wasn't described correctly in the listing, send the seller a email. You might be surprised at how they will reply. A seller's lifeblood on Ebay is their rating. If they fail to make you happy, it is perfectly fine to leave a negative feedback, and make sure you describe why you are leaving the feedback accurately, including that you contacted the seller and they wouldn't make good on their product. This is your best tool for getting what you expect from something you purchase.
When I buy something, and it's not what was advertised or was inaccurately listed then I don't worry about them leaving feedback for me.
But most of all, if you have any doubts, ask questions. If they don't list shipping, send them a email asking the cost and include your zip code in the email. If you aren't sure if the cables are included, ask. Don't bid until you know, if you aren't willing to accept that you may have to obtain one yourself.
Anyway, just a few things I've discovered in my Ebaying in my experience. I wish you good luck!