So what we need is these;
1. you do not need new stuff just because they say TODAY'S SALES.
2. if what you do most with your cellphone is text-messaging, then you do not need one with camera (with those mega pixels) and mp3 player. A digital camera or an mp3 player costs a lot cheaper combined than the cellphone with the camera and the mp3 player. One simple cellphone costs you Rp. 400,000, a KODAK camera with 5 mega pixels costs you only Rp. 800 ,000, and an mp3 player with 1 GB only Rp. 120,000. Compare that with the cellphone with those features. It would at least cost you Rp. 4,0000,000.
3. one KOMPAS newspaper costs you Rp. 3,000 in the morning, but wait until 11 a.m, you will always get it for Rp. 1,000. If you think the afternoon paper is not that "fresh", then the morning one is not that fresh either. What you read there even at 5 a.m is news they collected only until 2.a.m. Real-time news is only on the Internet. Act accordingly to those 'new arrivals', in particular electronics; wait andyou will have a good price.
4. go to the traditional market for the unprocessed foods like fish, meat, or vegetables. it is always cheaper (and negotiable) but for the processed ones, buy only on Saturday and Sunday when Giant, Carrefour, Alfa Ratelindo launch their weekend price wars.
5. going by taxi because the public bus is so crowded (with pickpockets) and so life threatening?, then take PUTRA or Express Taxis. They are as comfy as the expensive BLUE BIRD one and yet forty percent cheaper.
6. do not smoke. Period.
7. buy anything cash. Anything they say it is cheaper to buy on credit or the so called zero percent credit thing is a nonsense. Credit card companies are there only to make cash. Besides, paying cash helps build the resistance (as you are not always with the extra cash in your pocket), while using the credit card enhances impulsiveness.