I've got to agree with Ken here, what exactly is your complaint? That they sold something they didn't actually have to hand, but refunded you your money? That's not exactly grounds for a complaint, rather the reverse in fact. They could've just kept your money and kept you hanging on, promising something which never arrived... That would have been cause for complaint. My .2c, is that you leave a factual feedback. State the facts, ie, they didn't have the item, but that they refunded you the money, and let it go. Look at how many people here complain that they pay for goods or services, yet never get what they wanted, and still never get their money back. Look at the Jakub incident... I can understand the frustration of not being able to get the deal you were after, but take a little consolation in the fact that you got your money back to you without hassle Maybe not the best transaction, but far from the worst... Keep it neutral and factual, and there won't be any bad blood. Even if they were to leave you negative feedback (which sellers now can't do anyway), that would be one negative comment, out of how many positive ones? Anyone reading your feedback stats would easily see what happened with a transaction, and know that there was no fault with you