Is anyone having issues with buyers unable to add Buy It Now Items with Auction wins to combine the shipping. Over the last few months I have had numerous buyers contact me saying that there is no option to request an invoice with they try to combine both. I don't have the immediate payment option in my business policies. This didn't seem to be a issue a year ago. One odd thing I did notice is that a buyer from Canada was able to do it but my US buyers can not. Also if I don't send an invoice they US buyers can combine the two with no problems. So tied of refunding the double charge for shipping and getting charged the .40 for each transaction.