Common examples of items being free.99 in price-
Fire T shirts
Dude 2- Nah, I'm not in the mood to reach into my own pocket to pay for anything....SHOCKER I know.
Dude 1- Ok then, let's just go to the fire hall and eat the leftover pizza, it's free.99
Dude 2- Perfect!
You: How bout I punchasize your face?
Friend: Oh yeah, how much?
You: I'll punchasize your face for free.99!
Proceed to punch friends face. The .99 addition to your free punch was the pain he will be feeling after.