Help to get a bed for BMD husband and his wife

My husband and I have been married for 10 years in December and have been sleeping in separate beds for half that time as he requires a hospital bed. My husband has Becker's Muscular Dystrophy that wastes away his muscles and nerves causing health issues, sleep problems and pain. During that time we have gotten rid of our queen's size bed for more space and I have either been sleeping in a single bed close to our bedroom window or our couch in the lounge. We have found a bed at Harvey Norman that would enable us to be back in the same bed and help with pain and relaxation through adjustable functions, a zero gravity option that improves blood circulation and vibration for muscle relaxation. It is usually $11,000 and at the moment they have a floor model that is $7,000. I have tried to get it on finance but was declined. This bed would be life changing for us both physically, mentally and emotionally.