Are you in the states?
Have you visited with any of the vest companies? We orginally thought that we'd have to come up with 20% of the cost of the machine based on our insurances durable medical equipment policy; however, we were assigned a case manager through our insurance company, the vest company submitted initial information. It was denied, then they asked for more information, we were sent a vest and after about a year we were informed our cost was $500.
With a friend of mine, the vest company was able to spread the costs over two years -- two claims possibly as a rent to own...? so insurance covered a good portion of the costs, then they were able to get low interest financing thru the company for the remainder of the amount.
When I first heard about the vest, I began to put money away, plus thru work we have flexible spending accounts to set aside a portion of costs for medical expenses using pretaxed dollars.