If cheap is the best way, then how can you say I won't get much from a mogul's point of view?
Cheap ISN'T the best way. From a mogul's point of view - a mogul who
has never been on a set before - you will get less perspective and
understanding of how a scene like the one you posted is put together.
One person (your aspiring DP) setting up a white bedsheet, a couple
of lights and a camera and pressing record is cheap, but that's not the
way it will always be. It may be great experience for your aspiring DP
to learn a little about lighting but you are not doing this scene to help
an aspiring DP learn about lighting. What is best for you is to get a feel
of how a scene is put together. And as I pointed out doing it with a
small, experienced crew in a studio will only cost $460. Not considered
high budget by most people. But extreme;u valuable for an aspiring mogul.
Talking with a skilled DP about your questions regarding getting that
white background and watching him work would be valuable. Talking
with an experienced director about coverage and set ups and watching
him work would be valuable to an aspiring mogul. Watching a small but
experienced crew set lights and move them from set up to set and get
just the right amount of haze in the room would be valuable to an aspiring
mogul. None of that is going to happen with the method you are currently
considering.
You can shoot that 30 second scene on the cheap in your living room any
day after work - it will take 30 minutes tops. Excellent experience for a
total newbee DP or director - not so helpful for an aspiring mogul. At this
stage it isn't about the end product; it's about learning what it takes to
put together a cast and crew and a shoot day. You will learn none of that
with your current method. But you will end up with an end product that
looks okay.
Am I misunderstanding what you need to experience at this stage? Is it
all about getting the scene as cheap as you can get it? Or do you need
the experience of putting together a small shoot like the job of a mogul?