That's a good thing. You can do some face to face negotiation.
It's also unlikely that a scammer would make such a suggestion.
Meet in a public place like Timmy's rather than at your home (even though he has your address).
It's unlikely that Canada Post scratched the screen, since they did not open the package and unfold the laptop. If they did, the package would have been marked as opened and taped with specialty tape.
Make sure the serial number of the laptop being returned matches the serial number of the one you sent.
If he paid by Paypal, you should refund by Paypal. And the two of you should initiate and agree to a Mutual Cancellation. This will get your fees back on the sale.