Sure, it's extremely easy to blow a fortune travelling around Japan. But it doesn't have to be that bad. My own experiences were of reasonably priced venues, cheaper transport options and a lot of free pavement pounding. I've always had a great time doing it and really think you get a better view of what the country is really like (I used a similar approach in the States and enjoyed that too).
However, when friends ask me about what they should do on a trip to JApan, I'm instinctively wary about what I recommend as I know that, no matter what I can suggest, all the evidence is that, for the holidaying visitor, it's going to cost them a LOT.
So it's a relief to see someone taking a holiday in Japan, and on a reasonable budget too. Really 10,000 yen is not a great amount when you stack it up against other holidays you might take. Nice one Guardian writer.