The Rivian hardwire charger is only $500? That will likely be the cheapest wall charger available anywhere. Still just plugging into a 6/50r or a 14/50r is easily the most cost effective solution while having an adequate mile recovery over night…. Unless your daily driving is a couple hundred miles at which point the 60 amp hardwired charger would be the only reasonable solution. The extra 16 amps of capability would be huge.It actually has the ability to use 48 amps if you hardwire on a 60 amp circuit.
It is a very good price at 500 and should be able to be used with the Rivian app.