thats the problem I was going to raise. hobby shops are few and far between.
and you've picked someting that no one has heard of.
chances are when they stop manufacturing it (a year or so maybe) parts for it will dry up pretty quick.
thats why I always went with something that was more mainstream (like a Hpi, a traxxas, or a serpent) as I knew I could always get parts and friends also have similar parts that would fit in an emergancy.
aluminium gears and nessacerily a good thing. if a stone chipping gets trapped in a driveshaft or cv joint or hub carrier or even in the diff (if its an open ball job, or belt driven planet diff etc), then the more expensive part will get wrecked or maybe even wrench your engine off its mounts or worse, snap the con rod and ovalise/destroy the engine internals.
I would stay with plastic cogs and spend time meshing and aligning them well.
then maybe make something out of thin plastic or rubber to protect the gears from chippings
