I would definitely spend some time doing research in the forums to see if this is a common pain point amongst merchants before building it for the masses. This sounds like it would be a "nice to have" but not a "need to have" in a store, and I can see any larger stores having this type of tech already built into their ERP. If you have the skill or resources, build the app for your store since it's definitely something that will help you. Operating a public app has a hefty price tag associated with it so I would see how much it costs to operate and what you expect the support burden to be (never underestimate people's inability to not read) to identify if this is something you want to offer to all merchants.
Feel free to reach out to our CTO, @Joel-Reeds, if you run into any snags during development - we operate on the customer's side of the shipping journey so we've likely solved a lot of the development problems you may come across.
I agree a supply tracking would be very useful. Especially that shopify has this data, being able to pull in an inventory of current boxes and labels would be especially helpful!
Thanks so much Sharon!
As my store has grown, I have also been able to mitigate this issue with a system. I basically doubled my shipping inventory, and generated a "pull from" section of my inventory. Once a box of supplies is pulled, another is ordered. This could cause issues when an unforeseeable spike in sales pulls too fast, but having an app that tracks inventory would not prevent that same issue.
I also don't have the luxury of bulk shipping with this system.