Tires on my m/c trailer were looking pretty ratty, not good enough for the 1,500 miles I need to do next week with some bikes. So off to WalMart to get a new set - they come pre-mounted on trailer rims and are around $160 each.
I get some other crap while I'm there, go through the check out line and the lady working there was a complete idiot. Had a hard time ringing stuff up , etc. I pay, get my receipt and go home.
At home, I check the receipt; she gave me my other stuff for cheap and didn't even charge me for the rims and tires! I got outta there for $20.16.
Normally I'd have said something, but I didn't look until I got home and WalMart is about 45 miles away. So it looks like I got free tires!