I'm sure your reply made you feel good, but it also told them that the email addy they sent that spoof to is a valid one.
Prepare for an onslaught of "body enhancement", investment, prescription and other bogus things in your inbox, my friend. Because if they can't fool you with the scam, they'll sell your valid email addy.
NEVER reply. But DO forward such things to
spoof@paypal.com (or
spoof@ebay.com)