E-bay mate, you can get batterries from 12 quid radio gear (2.4 ghz) from £28 and brushless speedo and motor combos from £65 and as for spares they do appear but you can upgrade to schumacher fireblade parts,basically the same car, hope this helps.
P.S always go for the best servo you can afford, savox are very good and get metal geared, it my be a tad expensive but worth it.