1. Using 100-yen Shops
A good policy is to always check the 100-yen shop before buying something from a regular store. They carry an amazing variety of items and are ideal places to stock up your apartment with dishes, silverware, and other essentials to survive when you first arrive.
2. BUY IN BULK
Not everything is a bargain at the 100-yen shop, especially toiletries and other things that you’ll use everyday. It’s better to buy essential consumable supplies like tissues, detergent or body soap in bulk from stores like Costco. There are several around Tokyo and if you can find a friend with a membership, tag along with them every once in a while and stock
up. It’s also a good idea to buy lots of frozen veggies and fruits, as these can be absurdly expensive when sold fresh in the supermarkets. If you can’t make it to Costco, try finding a local wholesale food store such as “Niku nom Hanamasa” (there are several around Tokyo) which caters to restaurants and sells meat and seafood at big discounts. To manage bulk amounts of food, I bought a cheap box of 200 plastic bags which I then use to separate and freeze a few weeks worth of meat and fish.
3. BEWARE OF WARIKAN
Obviously, you should try to cook at home as often as possible if you’re living on a budget. And you should also try to pack a lunch everyday if you can. But sometimes you get invited out and want to have fun. In Japan, it’s pretty normal for a group of friends to share all the food and it’s often (but not always) customary to split the bill at the end of the night (called warikan). The problem is that you end up having to help pay for the five bottles of expensive wine someone decided to order. If your friends are considerate they will pitch in more if they had a lot, but don’t count on it! Your best bet is to go to a place with nomi-hodai or all-you-can-drink (usually for two hours) with a set individual price or to go to a Westernstyle pub where you pay separately as you order, (called betsu-betsu). You can also just buy snacks and drinks at a convenience store but be careful because it’s bad etiquette to eat and drink while walking around.
4. INTERNET ONLY PHONE
Mobile phone plans can cost up to 8000 yen a month or more and require you to sign a 2-year contract. Opt for an internet-only plan (with no calls included) and use free apps to communicate like Skype or LINE, which are really popular in Japan. Or, you could buy a portable Wi-Fi router that you can use at home and then carry in your pocket when you’re out to use with your smartphone. Either option will only cost you about 3000 yen a month.
5. SHOP ONLINE
Shopping online using Amazon or Rakuten is easy and convenient in Japan. You can even have your package sent to a local convenience store for pick up and often can get next day delivery. You can use a barcode reader on your phone to find better deals online while you’re shopping at stores, too. I usually use Amazon to buy big boxes of oatmeal or my favourite cereal that I know I’ll eat and that last for a long time.