"DW, please tell us how much is to rent a 3 bedroom house in Tokyo compared to Melbourne or how much it is to eat there western style.
Somehow I think it is disingenuous to ignore some of those points...
Of course you can do it the Japanese way but so you could buy here another sleeping bag.."
Well, I used to pay about Y350,000 per month for a 3 bedroom apartment in a quiet part of central Tokyo. We had underground parking, gardens and gardeners, permanently staffed reception and 24 hour security guards. And the flat and grounds were much higher spec than anything I'd seen in Melbourne (e.g., all windows were German made double-glazed units with built in fly-screens, kitchen was German too with soft-touch close, there was underfloor heating, that sort of thing). At the time that was probably more than Melbourne rent for something similar - but given that even my house here would now rent for about $1,000 a week, there's probably not that much difference now.
I'm glad that you asked about eating out: Tokyo is so much cheaper than Melbourne - even at the Michelin starred level - that it's embarrassing. I used to feed a family of four at a good family restaurant for what a single main course can cost here. Even Epicure has admitted that Melbourne's prices are internationally stupid. It's also worth pointing out that Australian cheese and meat were cheaper in my supermarket there than they are here ...
And sleeping bags - well since I bought a superb quality Nippin 800+ FP bag with Dimension Polyant fabric (6C/500g roughly) for about $285 at current exchange rates I don't really need to buy anything from WM.
Truth is that Tokyo is now a better place to live than Melbourne - better, cheaper food, superb public transport, it's unquestionably safe and even the people are friendlier. The shops have the best stuff from all around the world, most of which simply isn't available in Australia at any price (the bushwalking shops are the best I've seen anywhere) and it's also, generally, cheaper for shopping (with the exception of Patagonia).