Warm, dry area beeks can be really, really simplified:
I use a migratory cover identical in design to a solid bottom board. Starter hives are sometimes palleted- 4 per pallet layer, and 2 or 3 high. The stacked starter hives share top-board as the next layers bottom-board. Up to 12 colonies per pallet.
When a yard is stationary on a stand, I replace the bottom with a screened board.
I always use an inner cover- sometimes one sided, sometimes two sided. Otherwise, I crush too many bees. Accidentally crush one queen and after grieving, you will use the inner covers.
I bind all hive stacks with a length of nylon rope and a trucker's hitch to tighten. You want to be able to lift the stack without shifting, so really tug on the binding.
Also note in this design that mediums are made from cheap fenceboards using cabinet biscuits for corner reinforcement.
Cash outlay for a medium super is less than $2/per box. (not including frames)
The design principles are inexpensive capital outlay, interchangeable parts, and fast fabrication.
My cover/bottom boards are made with a 2x2 lip and a 23" length. On pallets and stands I have sleeper 2 by boards that are at 19 3/4" spacing. The bottoms fit over the sleepers and lock the hives from sliding.