yea, buyer beware really sucks when it comes to ebay. most sellers outright lie about what the item is, or they are too ignorant to know the difference.
And in some cases, one cannot confirm by the images alone, and have to take a chance.
But I have learned this: if the item is shown to be the right part in the Compatibility section, or if you message the seller and ask, and they say it is, and it later turns out to be wrong, you can file a claim and get your money back. All that data is recorded so ebay staff can confirm it. I've done this maybe three times in the last 6 years.
If the seller makes a claim a part is what you think it is, they are culpable if they are wrong. AS A SELLER, I sometimes find being vague is better than saying too much, to protect myself.