the old keys scam!

[The Sleeper]

So I had to go and copy my keys today so i can give them to the realtor to show my apartment. So the chick from the office comes by to grab the keys and she asks how much it was so she can reimburse me, and I go "10.50" and she goes, "do you have a reciept?" and I go "uhh no" and she starts getting worried and calls her boss to see if she needs a reciept cause she doesn't want to be a victim of that old keys copying scam. She ends up paying me $10. Now that I think about it, I should've said it was $15 and got my self a milkshake with the extra $5.