This says it all the red flag is any location in China. "Most items will Be Shipped From Our Canada Location~Sometimes~It Will Be Shipped From Other Locations Such As HongKong Or BeiJing Base On Size Availability Or Others"
Those are legit. From what I have seen with the concords is that there isn't just 1 type of carbon fiber they used. I believe there are about. One boxy, the other is a bit smooth. I hope someone else can verify my claim.
I may be new here but I can tell you these are fakes. The seller did all the fixes on the shoes such as the 3rd spacing and 23 but they did not do a carbon fiber fix. It seems like the C.F. is painted on.