I would like to check if the statement below an ITT or Offer. Is Cecelia an offeree or offeror? Thank you!

Due to a recent back injury, Cecelia has decided to give up water sports. She placed a notice that states, "Pre-loved Stand-up Paddle Board (Brand: Marine Life, Model: MR6000) for Sale, $500, call or text 9xxx 8xxx or email to gmail.com", on the local supermarket bulletin board and also advertised this on Treasure Cove, an online platform for people to buy and sell second-hand items.

On Monday, Amanda, Cecelia's friend from the same university, saw the notice on the local supermarket bulletin board and decided to call Cecelia because she had been looking to buy this particular brand and model of paddle board. Amanda told Cecelia that she would love to buy the paddle board but wondered if Cecelia would sell it for $400. Cecelia said "no" and that her selling price was fixed at $500; however, she was willing to give Amanda until Friday to make up her mind to buy the board for $500. She further confirmed with Amanda that Amanda could either call or text her by Friday, 5pm