You need to do your homework and get competing cost comparison before you buy any HA. Personally I doubt any where there is an insurance carrier that pays 100% of hearing costs, be it 2020 or 2014. Now if your in the military or under 18 years old that’s different story. If anything six years ago there was less HA insurance coverage versus today. With that said I trialed two Phonak M90 hearing aids for a combined cost of $4800. So your claim they run $6,000 to $8,000 should flash (danger - danger).
Secondly anyone who buys hearing aids through eBay should think twice. Like your really getting reliable quality service will a “full HA warranty” buying through eBay, because the seller has so many good reviews. Wonder if Craigslist is next? I’m not exactly sure what kind of story your telling, but glad your satisfied with your M90’s.