When you place a bid on ebay, there is a disclaimer that states your bid is a contract. If you aren't sure about whether you want an item or not, it's simple. Just don't bid.
Sorry if you think this is harsh but it costs a seller time and money to list and sell on ebay. Rebeccalou is one of the absolute best sellers on ebay. She is extremely honest and would never, ever misrepresent her items. I have read many threads on tPF asking about who the good ebay sellers are. Rebeccalou is always mentioned as highly recommended.