Ladies (and gentlemen)--
When you are looking at a bag and thinking about bringing it here for the authenticators, part of your research should be into the seller's feedback.
While in the end it is all about the bag--feedback is, IMHO, critical. Why? Because even when you have legitimate images, if the feedback is suspicious you need to stop dead in your tracks. There is always the chance that the bag might not be in the seller's possession.
For example take the case wherethere is 0 selling history. You then look at the buying history. Lots of stuff--but NOTHING over $10. Most of this seller's buying history has been for items in the $1-$3 price range.
So what does this say? There is an all-too-typical pattern on eBay. Potential seller starts buying enough little things to amass modest but positive feedback. Seller suddenly emerges with a--drumroll--birkin in a coveted color. Red Flag!!
Speaking only for myself, I am going to suggest that posters take a minute to thoroughly investigate the feedback. No matter the images, I would never in a million years buy anything $$$ from someone who has only amassed this feedback history. I think I am right in assuming that it could very easily become a disaster.