I've worn them for 20 years, since my early 30's.
I've had Siemens, Phonak, others. The price of the aid is less important than the ability of the 78 year old to be willing to accept change, and also the multiple trips back for small adjustments to the sound.
A person that has lost hearing and made it to 78 with no aids will either find themselves overwhelmed by all that LOUD World they've been missing ~ or really excited by what they got back.
It goes either way, some are really happy to be able to hear their grandchildren talk, and others find all that new sound to be too stimulating & annoying for their patience!