Assuming that you're in the US, it should still work the same if you buy it online from sources like FactoryDirectHearing.com ($3700/pair of OPN1) or BuyHear.com ($3800/pair of Opn1). They will fit your father-in-law with the correct receiver for the same price as far as I can tell. If you require custom molds instead of using the standard domes, then it'd be extra. Otherwise they'll send different size domes to you with the predetermined receiver to try out.
Originally Posted by AlexB
No need to bring it to a local audi to fine tune while you can do it remotely with the original online vendor at the comfort of your own home. They'll do the initial programming of the OPN based on the audiogram you send them. If that works out then great. If you need fine tuning/adjustments, they'll send you a wireless programming device connected to the internet and you'll schedule a programming session with them (or multiple sessions) to fine tune the programming in the convenience of your own home while on the phone with them and connected to the internet. Once you're satisfied with the fine tuning you'll send back the programming device to them. Many members in this forum has gone this route and are happy with the online service. Even one member had had to return the OPN1 pair back to them for repair (iPhone streaming issue) through the online vendor and that also worked out well for him.
HA wearer since the 1990's > Rexton Insite+ CIC (2011-2016) > Oticon OPN RITE (2016)
KHz 0.25...0.5...0.75...1.0...1.5...2.0...3.0...4.0... 6.0...8.0
Left ...10...10....10.....30.....70....75....80....95.. ..90....80
Right .25...30....40.....55.....75....85....90....90...1 00...100