Karma, it will last you a lifetime!
Not in a product purchase, but another good story. At the age of around 12, I found a wallet in the park down the street from my house. It had in it a drivers license, a Social Security card, some other "stuff", and some cash, about $40 to $50 as I recall. A little research in the telephone book (this was around 1966) and we made a call. It turns out that the wallet belonged to an elderly women who lived in the apartments across from the park. She lost her wallet and didn't know what to do as that was the last money she had until her next Social Security check. It was a pleasure to go with my dad and bring the wallet to her. What goes around comes around. OP, you did the right thing.