Hi stllady,
The better options and possibilities I know of in the DC corridor are in post #2 here.
Adjustable beds don’t need to be customized in the same way as a mattress so an online purchase can make more sense. Because they carry the major brands and their value is good … I use http://www.adjustablebeds.org/ as a value reference point. Of course I would tend to purchase locally from the same dealer where I buy a mattress but this will give you an idea of “good” pricing. There is more information about adjustable beds in the adjustable bed thread and post #2 here may also be helpful.
You are wise to be looking in other directions than major manufacturers and mass market outlets 
Phoenix