One point so obvious that I have to make it. Buying on eBay isn't playing with fire. Taking crack from a stranger on the corner is playing with fire. Buying a preloved bag...not so much.That's all well and good, but unless someone is extremely, extremely, extremely naive, if they are buying on eBay, they know the risk they're taking with buying counterfeit goods.
I'm just saying that if you know you're playing with fire, then I don't feel sorry when or if you get burned. If you're not willing to get burned, then don't play with fire. Why should I feel bad for someone who knowingly took that kind of risk? I honestly don't see anything mean about that.
If someone doesn't realize the risk of buying counterfeit goods on eBay, then I would suggest that person take some more time to learn about shopping and the internet before buying anything online ever again.

Hmmmm....
I still marvel at the harshness over something as inconsequential as handbags.
In any case, I hope you are always fully informed at an expert level with every fashion, home, health, lifestyle, relationship, career, money, parenting, etc. decision you make. And I also hope you never, ever look for empathy or support when you make a mistake or someone is unfair to you.
Because if not, karma is a harsh mistress and someone who is well learned in that area where you find yourself on the wrong side of the coin may dish you out the same "you should have known better" mantra vs giving you the empathy, help or second chance you need.
Be well on your journey. (And I am being honest. Some of us are actually nice. LOL!)