Aaron Carter will take a pic with you, but only if the price is right, according to someone who went to his show.

Aaron was at the Indiana State Fair in Indianapolis Friday, when he performed as part of the Pop 2000 Tour.

According to the fan, Aaron went into the crowd and was standing next to a group when he said, "You're in my crew."  the fan says she responded, "I want to be in your crew."

She says Aaron fired back, "It will be $300 for a meet-and-greet."

The fan tells TMZ, Aaron said, "I'll make it $250, but she said she had no money. She claims Aaron said, "How about $50 for a picture." She reiterated she had no money, and Aaron said, "I'll do one for free." The fan said she felt bad, claiming he clearly needed the money. She says Aaron responded, "I don't need it. I have an $80,000 watch on." She says he then walked away and that's where the video picks up.

You hear the fan sing, "I want it that way," and Aaron fires back, "I don't want you at all." Aaron then smiles and winks at the tipster.

Aaron had performed with a number of artists, including Tyler Hilton, Ryan Cabrera and O-Town. Lance Bass hosted and sang "Bye Bye Bye" with O-Town to close out the show.

Aaron's had a rough week. A family member called authorities Wednesday, claiming Aaron was suicidal and doing drugs. Cops came to do a welfare check and determined he was okay.