Using Ebay Standard Envelope for sportscards under $10. Is there a setting where the postage amount is not dislayed on the label? There is for USPS 1st Class but I don't see an option for standard envelope. I've cut my shipping from $4.99 (USPS 1st Class) to $2.50 (eBay Standard Envelope) but now am getting dinged on feedback for shipping amount. I thought $2.50 would be easier on buyers.