My wife as a budget and she lives very well there as we wait for her to be here.

Rent 8,000
Internet 1,300
Water 700
Electric 4000 ( i know, this is big. Air-con on most of the time)
Others 8000 ( Broken down as 2000 a week for personal items, clothes, food, etc)

Total 22,000 peso and she lives like a queen. I know she can save money as well out of the 8000 peso for personal use that is on the list above.

My wife was not working when we first meet. To keep her busy as well i invested 50,000 peso in a small business to keep her occupied while we await for her visa. 40,000 in stock, 10,000 for hangers, mannequins, business license and first 2 months rent. Rent was 3,000 a month. The mark-up on each item was 30-50% from cost. She made enough money to pay the rent and a little more. She thought the 3,000 peso a month was to much so she closed the store and started to sell on the wet market, 30 peso a day rent but reduced the mark-up.
All this was to keep her busy and it works, she wants to work every day, that is normal there, she sells on the internet and her brother sell clothing for her in the mountains as a walking market.
Making money is very hard there, 35,000 peso a month from a saloon is a huge net profit per month. All i am expecting to make from my wife's business is my money back or a lot of shorts,jeans, dresses and shoes coming here but it will all have been worth it was she is very happy working for herself.

Only my personal opinion but i think you are dreaming if you think you can make 35,000 profit from a 500,000 outlay. That is an 84% return per annum. I work in accounts and i know that sort of figure is unrealistic. As businesses go, starting from scratch you are going to make a lose the first year, might break even after 2-3 and can make some money from year 3+. If you are buying a on-going concern then you can not buy a business for 500,000 peso that is making 420,000 net profit a year.

Sorry for being so negative, i have my eyes wide open and this is only my opinion, please prove me wrong and go for your dreams.