If you are already retiring and you don't have much money in your wallet, the best way to sustain your living is by transferring to another country where the cost of living is much cheaper. A lot of these expat communities are located in countries in South America, such as Colombia.
Are you one of those transferee's to Colombia? Well, better be ready. It's a whole new life down there.
Link: Moving Abroad to Colombia | Move Abroad Now!