Multi Fees Magento Extension is a useful addon for us. All processes went quickly and smoothly forward during buying, installation and integration. After having a small issue with the extension we were able to test the support ! in just few words: AMAZING CUSTOMER CARE SERVICE. Our issue was solved in only few hours during ... the weekend (Hey guys, do you have a "follow the sun" service to allow such quick reply ? ;-) ) ! Definitly one the best extension builders !