I was talking about your original post in that you wanted to come out to Tokyo and live large.
If you hit the wrong club at the wrong time you will get hit large. This is true of any large club but due to Tokyo's supply of people then the charges can be quite bad on a top night out.
Saying that, I have spent over 700 GBP on one night out in London.
My room was found using Oakhouse and they have quite a few places around Tokyo and are very resonable.
Japan guest house Oakhouse - NO.1 guesthouse accommodation in Tokyo and Yokohama
If you are into Akiba then the where I am staying (Ueno park) is very convenient not only for akiba but for getting around to other Tokyo spots due to the large station and surrounding minor stations feeding other lines.
I am about 15 min walk from Akiba and about 3 min from Ueno Park.
Good fair shopping to be had in this area along with other male activities. 24 hour shops are all over the place. I think that within a mile radius of me there are over thirty 24 hour shop plus many, many vending machines.
If you want to do Tokyo on a budget then you should look at Oakhouse or Sakura (heard some bad stories about Sakura but they are the same budget as Oak). You get a room, bed, fridge, TV, aircon and then the shared facilities of kitchin area, Washer and dryer.
I am here for 3 months and am looking at an overall spend of 3.5K GBP max.
After the big costs of flight and accomodation then the basics of food drink, laundry and sundries it should leave me a good amount to enjoy myself.
Lets face it. A day in Ueno park sitting in the sun and watching the people is free.