Do You Think This Ebay-purchased Chanel Bag Is Authentic Or Fake? Any Expert On Chanel Or Designer Bags?

My friend bought a Chanel Coco Cabas Vinyl bag on Ebay just a couple of days ago and it is not due to arrive till about another 4 or 5 days. But now she’s having doubts if it is real or fake. Any expert on Chanel or luxury designer bags care to share their expertise? Here’s the Ebay link http://cgi.ebay.com/ws/eBayISAPI.dll?Vie…
Ebay item number is 180126548735.
What is really has us scratching our head is the nice quality of the bag seen in the enlarged close-up pictures and also the presence of a receipt. But some of our friends really think it is a fake. They question the font of the Chanel logo especially on the tag and dustbag, the rainbow hue on the authenticity card, and the fact that this seller may have sold a counterfeit bag before (see Ebay item 180109506064 with the generally accepted counterfeit serial number). Two of them quite possible (Ebay item 180102282584).
So what do you guys think?

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