The beauty of C02 inflation devices is the repeat business it generates for the shop. Over time I realized a better margin from those cartridge sales than from just a pump. Loved selling them, customers loved them because once mastered they were easy to use and gave full pressure. Me? I had one, never used it. Carry a Zefal frame pump, have for 40 years. The Morph is much better by far, but I am a traditionalist!