Although I'm not a seller, I can understand the frustration of honest sellers when they receive an unfair negative feedback. I have seen senseless negative feedbacks given by buyers who are either malicious or are simply stupid. I am against all that and I sympathize with honest sellers who are victims of such malice and/or stupidity.
However, the OP and those who replied seem to be honest sellers who are thinking ONLY about defects and transit damage that occasionally happen in spite of all reasonale precautions taken by a sincere seller. I've experienced such instances a few times myself and, as long as the seller is co-operative, I bear no ill will against him. I wouldn't consider giving a negative feedback at all.
On the other hand, some sellers are very careless and provide flimsy packaging. They are uncommunicative and don't seem to care if the buyer receives a defective product. Some sellers may even knowingly send a defective item because many buyers will not bother going through the cumbersome process of claiming a refund.
When a deal goes sour with such types of sellers, getting a refund is not enough to compensate for all the time and effort the buyer spent in searching for and ordering the item, as well as the disappointment and the hassle of claiming a refund. Such sellers deserve to get a negative feedback whether the buyer is refunded or not.
