This is a good one to be aware of as we recently were subjected to this situation and are canceling our citi card account in response. We made an online purchase from a merchant after thoroughly reading their policies on delivery and terms and conditions. We completed the transaction and paid the final dollar amount including a delivery charge. The product arrived with additional COD charges not stated anywhere in terms and conditions or in shipping policies so we contacted the vendor who stated that they refused to honor our purchase price... read full review »