TB, that was complete and total extortion by your real estate agent. If your listing with this agent was expired, then she had no right to present such a bill. All of my listing agreements say that my company bears the total cost of marketing the property. The only time a customer can be presented with a bill is if they decide to pull the property from the market.

For example, a couple is divorcing and decide to sell their house. They hire an agent and the agency spends money marketing the property. The couple reconciles and decides not to sell their house, and pulls it off the market prior to the expiration of the listing. The agency then has the right to ask for reimbursement for their marketing costs.

Not only was that unethical, but she could have easily lost her license for that little stunt.