We'd love to be able to show real time estimated delivery dates at checkout. We sell gifts for special occasions so delivery time is important. In addition some of our items require a signature on delivery so being able to let someone know the date it should arrive would be ideal. We use USPS and FedEx. You can go to either website (USPS or FedEx) plug in the ship from zip, ship to zip and the shipping method and get the estimated delivery date. Any thoughts on how this could be incorporated into FoxyCart?