1. People always make weekend grocery trips. Why can't they just add a packet of coffee powder? Why do they have to use you? 2. Amazon just discontinued their dash buttons. There should be a strong reason for it. Do you know what it is? How are you planning to avoid it? 3. The issue with diapers and toilet papers is huge. They take up a lot of volume and have very little weight. Does the scale approach work for them? I'm not sure.
It'd be interesting to see how you guys evolve going forward. Best of luck :)