Through great conversation today on Twitter with @ndavidovics and @iPodsibilities we may be changing our thoughts on syncing and storing carts. A 10 port USB hub linked to our preexisting MacBook along with a lockable storage device may save us around $1,600. The hubs we are looking at...
Looks well made...the details are here.
This one is located here and seems cheap...not sure it will be the one.
Developing idea...Further Ideas
Buy one stand up lockable Rubber Maid storage device, place dish racks (or some other idea that may come to mind) and eliminate the expensive cart!