What do those bases do any way? Could never figure out why they're so low to the floor, always bang my toes against them.
As an ex bed salesman the reason is rather simple:
One: to lift it off the floor - as daft as it what it may seem it is true. A low bed is the most unhealthiest thing for your back when you get out of it in the morning. The back muscles are still tight and this puts unnecessary stress on it.
Second: To enhance the mattress's support and on certain modules there live span. A mattress is most effect on a flat surface (use to get township guys putting mattress on drums ... )
Also a spring mattress extends the life of a mattress by 30% - like the shocks for your car.
But the purpose of this thread: But you can buy a base separate but usually only at a bed specialist.