Hi Jospehin
I am Indian , Staying here last 6months. One of the expertise earlier posted in this site about the cost of living in Sao paulo.
same i have described below
Renting an apartment in a decent neighborhood near the city center is on the top of the list. An unfurnished one bedroom apartment will cost upwards of R$1000 per month, plus condominium fees (where applicable) which can be almost equal to the rent in some cases. In most cases you will also have to pay the property taxes and rental insurance too. Rental contracts are fixed by law at 30 months, nothing less.
Only furnished apartments come with appliances and they are outrageously expensive, so you will most likely need to buy appliances. Refrigerators here range from the lowest price of around R$900 upwards to over R$2000 depending on the features you want. Washing machines are about the same and clothes dryers are almost unheard of here in Brazil. A basic 4 burner gas range/oven with automatic ignition will cost about R$500 and the more burners or features the price only goes up from there. Air conditioners are about R$1000 if you want one of those. Electric heaters (central heating is non-existant here) depending on the size are also expensive.
A trip to the supermarket can be frightening, prices are constantly rising on everything. A single person should budget about R$500 a month at minimum perhaps more if you like to eat a lot. Depending on where you go eating out can range from very inexpensive to expensive. Small "self-serve" restaurants offer ready made dishes from about R$6 and up. You can usually get a good meal at one of them (by weight) for about R$15. Good restaurants can charge about R$30 or more for a decent meal.
Utilities in São Paulo are also expensive. Electricity for a single person who uses lots of lighting and a computer will probably run around R$120 per month, water R$30, For a TV/internet/telephone basic plan you can count on paying at least R$175 per month without any extras and not counting long distance phone charges. Since many apartments do not have piped gas you will also have to pay for CNG to be delivered. The tank costs about R$90 the first time, then each further delivery they exchange it with a full tank and this costs about R$45. If you cook a lot or use the oven frequently it will generally last a single person only 3 months.
Unless you REALLY need a car and plan on doing a great deal of driving every day you should forget about buying a car here in Brazil, they are just to expensive when you factor in all the additional expenses. Popular compact cars here (manual transmission) and no options start around R$23000 and go up from there. The larger cars run from R$50000 and up. Insurance is super-expensive and the list of things that it DOESN'T cover is frightening. Taxes paid every year like IPVA, DPVAT are horrible too, then there is fuel which depends on the system your car has, alcohol for "flex" cars is around R$1,25 a liter, regular gasoline around R2,20, diesel R$1,90 and natural gas is around R$1,50. Add to that high maintenance costs, tires, etc.
Then too the bureaucracy involved in either having your (home country) drivers licence translated and accepted here or getting a Brazilian licence is absurd. If you come from Canada/USA/Mexico/Central or South America you can get a Inter-Americas Drivers Permit (IADP) which will allow you to drive here for 1 year with a valid drivers licence from home. An International Drivers Permit (IDP) is NOT valid in Brazil since it is not one of the signatory countries.
If your company doesn't provide you with a car and driver when needed you will probably save money in the long run by taking taxis when you really need one rather than buy a car.
I don't know much about the cost of living in Santos, however it will probably not be much different than it is here.