Kickstarter doesn't allow the backers to back more than one incentive. However, what you can do is pledge to the higher priced item and then add the amount plus shipping of the additional items that you want to receive. For example, if you want the $55 pledge of Four Tins of Christmas Teas as well as the Sampler Package for $25, you should pledge the $60 for the Four Christmas Tins (that's the pledge tier plus shipping costs for US residents) and then add an additional $27 onto your pledge for a total of $87. On your closing survey, please indicate which items you want to receive and if you want these items shipped to separate locations with a gift note, please indicate that as well.
Canadian and International residents have higher costs for shipping so please take that into account. If you have any questions at all, please contact me - I'm happy to help!