That's just for the products that can be proven to be fakes. There is also a lot that just are shoddy that you cannot prove, in which case the store loses a repeat customer.

Amazon has already lost me for products where I care about quality. The Pilot G2-05 pens I buy in store ($5 each in Australia) have never had any issues and all worked flawlessly until I drained them of ink. The Amazon 12 pack hasn't had a single pen reach the end of its life.