I have a Mako and I wouldn't characterize it as "good performing". It works, but its fairly slow compared to Xs and Gavins. They are not worth their retail price IMO, but on the used market they can be found for $800-1000 USD which is a decent value to price ratio.
I agree that getting parts (like shaft seals or o-rings) is just common sense on purchases of this magnitude. I have no idea what scooters/parts are available in Chile though.
Used Gavins might be a good alternative in this case because they use very inexpensive relays, reed switches, O-rings, batteries and standard Oceanic shaft seals all of which can be found worldwide. Price would be comparable to a new Mako and performance would be far superior.