Unfortunately, everyday fakes turn up in the marketplace.
It happens... You will take the necessary steps to get your money
back & let's hope the seller will be cooperative & make this easy
all the way around.
I know you have concerns about this, but just wait til the bag
arrives & if you need any additional help to know how you should
proceed if the seller isn't cooperative, we can all guide you here
on the forum as to what you need to do next... so try not to
worry (easier said than done, I'm sure)
And since you paid with paypal, you are protected