Where are you located? In a tropical climate?
I think you would be surprised at how, relatively, easily one can grow vanilla beans, especially if you are in an area where the lows do not reach too far into the high 60s at night, especially indoors.
All you really need is to buy a vanilla orchid plant (at any good nursery that’s one step up from a Home Depot nursery), a spot next to a window that gets plenty of sunshine, water, and diligence in using that water on the orchid.