March 03

• Suica NEX card: 5500
• Vending machine coffee: 130
• Via Inn Akihabara - 8 nights accommodation: 53500
• Matsuya - Curry and beer: 900
• Don Quixote - assorted goods: 4700 (unconfirmed)

Total: 64,730 yen

March 04

• Tokyu Hands, Ginza - Nested d20 dice: 262
• Tokyu Hands, Ginza - Case for macbook: 1260
• Don Quixote - cyalume: 2160
• Don Quixote - facemasks to keep warm: 400
• Puchi taiyaki, Ginza: 525
• Cospa - Steins;Gate windbreaker jacket: 4935
• Cospa - Kuroko's Judgment armband: 1575
• Vending machine coffee: 130

Total: 11,247 yen

March 05

• Toranoana - CDs: 10577
• Toranoana - CDs: 7050
• Sofmap - Tako Luka plushie: 1780
• JR Akiba Konbini - coffee, bread, umbrella: 910
• Gogo Curry: 700
• Suica recharge: 2000
• Konbini (NEW DAYS) snacks: 506
• Konbini (7-11) drinks: 1008
• Retro Enterprises - Single-8 film cartridges (3200yen each), P300 battery replacement: 10500

Total: 35,031 yen

March 06

• Konbini - snickers bar, coffee: 230
• Ichiran - ramen with extras: 1190
• Gamers - Vocaloid stickers and clearfile: 525
• Fake keitai for cosplay: 200
• Dr Pepper (vanilla): 130
• Cos-Cha maid cafe: 2300

Total: 4,575 yen

March 07

• Gachapon - Donut-loli badge: 200
• K-Books - Steins;Gate 8bit edition secondhand: 3480
• Candy Fruit Optical - Unit-02 glasses frames: 24150
• White Canvas - CDs: 3075
• animate - sign single, Symphogear ED single: 3689
• Family Mart - snacks: 1231
• Becker's Famiresu - burger combo: 780

Total: 36,605 yen

March 08

• Takoyaki stall near JR Suidobashi: 500
• Concert merch - handful of can badges: 1000
• Concert merch - Livetunes "glitch" tshirt: 3500
• Konbini - snacks: 1593

Total: 6,593 yen

March 09

• Toranoana - ?: 5024
• Toranoana - ?: 12213
• Toranoana - ?: 1470
• Sofmap - Steins;Gate regular PC edition secondhand: 2980
• Mister Donut - two basic donuts: 200
• Cospa - Railgun-related goods: 4620
• Gamers - East New Sound CDs: 3000
• Konbini - drinks: 300
• JR East - Shinkansen ticket to Karuizawa: 5240 (on credit card)
• Shinano Railway - ticket to Komoro: 470
• Royal Hotel Komoro - 1 night, basic single non-smoking room: 4500
• Konbini (7-11) - snacks: 640

Total: 40,657 yen

March 10

• Souvenirs from Komoro - apple kitkats and caramels: 2106
• Souvenirs from Komoro - postcards: 350
• Komoro vending machine drinks: 500
• Shinano Railway - ticket to Karuizawa: 470
• JR East - Shinkansen ticket to Tokyo: 5240
• Melonbooks - assorted doujin books and CDs: 6995
• Good Smile Cafe: 1400
• Cos-Cha maid cafe: 1900
• Reauta Touhou bar: 1500
• Konbini (Lawson) - snacks and drinks: 1021

Total: 21,482 yen

March 11

• Via Inn Akihabara - checkout make-good: 1000
• Japan Post - biggest cardboard box: 350
• Japan Post - postcard to Australia: 70
• Japan Post - EMS shipping to zone 2A for 10.075kg: 15100
• Uiharu figure for Ast: 5250
• Retro Enterprises - shipping for processed Single-8 films: 1200
• Cospa - kneesocks: 5460
• Cospa - Kurisu keitai strap: 840
• Cospatio - white gloves, eyebrow pencil: 1575
• Cospa - Morino Ichigo hoodie: 5985
• Konbini (NEW DAYS, JR Tokyo) - snacks and drink: 555
• Vending machine at Narita airport: 280

Total: 37,665 yen

March 12

• In-flight dinner: 15 AUD
• In-flight Canadian Club and Dry: 8 AUD
• In-flight breakfast: 12 AUD
• Cairns airport Hungry Jacks - bacon burger: 5 AUD
• Cairns airport Coffee Club - Medium skim latte: 5 AUD
• In-flight cookie bar: 3 AUD
• Taxi from airport to home: 33.30 AUD

Total: AUD $81.30

Sum total

• 258,585 yen == AUD $3,134 @ 82.5 yen/dollar
• 81.30 AUD for costs incurred getting home
• About AUD $1,570 for airfares and concert tickets
• Rentafone stuff is not yen included in these numbers

Approximately $4,800 from start to finish.