well it depends on the garage, I'd say about j150 just for the cambelt (including the kit), that would be the most expensive bit. Everything else is pretty cheap, oil + filter, fuel filter, air filter (or wash it, if washable), spark plugs - can't think of anything else, unless it needs replacing! What's the mileage?
It's all down to the garage - some can charge j300, some j150 so do a research! It's pretty much the same job as on the normal UK starlet, so ANY decent garage would be able to do it, just don't go to Kwik Fit -)