[E72!]

I finally got the refund I asked for (in the end, too little). :evil:
The other dispute was fully refunded.
So if you want to hear an advice, I'll give you mine:
1- Be polite but firm and let know the guy you know this is a scam, and unles your conditions are fulfilled, you'll take further actions.
2- If he starts giving excuses or doesn't answer, open a paypal dispute, and start again the discussion through paypal's mailing system. Make clear that you can take pics, post the manufacturer's chip specs, etc.
3- If he still doesn't want to solve things, elevate the dispute to claim, raise your conditions, and wait. Obviously, tell paypal you want to help as much as possible.

This is how I could get my money back, and it should work for you too.
Good luck! :wink: