Dog Bites and Bee Stings

I sold an exercise bike to a woman online for $20. She came and picked it up from my apartment today after I got home from work. It was really cold and windy when I went out to load the bike into her car. The bike was really heavy and the two five dollar bills and the one ten dollar bill she paid me with were wrinkled and frayed. I took that money to Home Depot to buy black garbage bags and duct tape. Of course those things cost more than $20 so I paid with my card instead. I felt less like a serial killer at check-out than I thought I might. Just trying to throw some stuff out and tape it so it says compact, nothing illegal to see here, thank you.