The "California" Indiegogo bikes will be at the California Rattan CA warehouse soon. There were 100 units with no front suspension but including the rear rack, tail light and fenders for $1199 USD plus shipping ($200). My bikes are already shipped in another batch and will arrive in LA by the end of May. The Covid19 crisis has delayed all bike manufacturing/shipping including Sondors.
As for maintenance, any bike shop can maintain the ebikes except for the Controller and Motor. Rattan has a 2 year warranty and will ship you any parts that fail. Sondors may have a facility in the US for repairs but unless you happen to live close by, shipping the bike there would be cost prohibitive.
Really with all these Chinese made ebikes you are pretty much on your own in terms of maintenance. The only exception is a major bike brand product purchased for a local bike shop at a higher price. Rad Ebikes are probably the best option if you want good warranty and service options but again, proximity to a service location is critical. These are just my opinions, not necessarily facts. Go with what you are comfortable with ...