Sorry can't help on price.
Dad's got an electric bed which my Mum was given by a friend and it was hardly used - then Mum only used it for 2 nights :( We've moved it to our house for Dad who uses it all the time now - really useful when his carers put him to bed early so he can sit up and watch TV and we can lower it later on. Its not got any special pressure mattress though.
Dad's been in hospital with sepsis and we were never offered a bed when he came home as part of the reablement package. They did give us toilet frames for both toilets, two walking frames for upstairs and down, and a shower/sink perch. All really useful and I'd recommend.
My Mum also received a commode for free which we kept and which Dad has used in the past when he's needed it. Luckily that was only temporary.
He also needs a wheelchair for outside trips. We purchased that.
Good luck. Its a brave new world.
As for delaying discharge that didn't happen to Dad. I'd asked them for an assessment of his needs because he had significantly deteriorated from pre sepsis. I though I was waiting for that and for him to have physio to walk and do stairs but went in one day to find all the equipment at the bottom of his bed to bring home and they'd arranged a care package starting 2 days later!
This did, as others say, have the advantage of getting him out of hospital - but im not sure now whether discharge was really thought through properly with missing new medication, unstable stats, incorrect TEP and a new infection. We've been left to pick up the loose ends.
And reading this thread has me wondering if we should also have a special mattress topper as he came out with a red pressure sore risk score! Thanks for flagging.