What's your experience with consignment apps for retail stores?

We’re in a similar boat with lots of Vendors and we’re struggling the most with the onboarding/inventory processes. Makers seem to be confused and it is creating a lot of extra work for our in-store team just to upload products into our system. If anyone has suggestions on how to streamline this process we are all ears!

I am currently looking into the apps you listed above, but if you have further insights into making the new inventory/new vendor process easier let us know!