Consider Bill and Ann, a couple who own a home valued at $208,000, the recent median sales price for existing homes. Doing so will provide them a two-bedroom, two-bath home with 1,000 to 1,200 square feet. Homeowner association dues cover outdoor work such as lawn mowing. Next, they buy a manufactured home for $65,000 to $70,000 - a common price level for manufactured-home resales in resident-owned communities. With the operating costs of shelter no longer coming out of their Social Security income, they will have the full $2,430 a month to spend on everything else. Shelter accounts for 40.2 percent of the consumer price index for urban consumers. Changing your home equity into a manufactured home and a lifetime expense fund covers 44.5 percent of your cost of living. A worker with typical earnings can expect Social Security benefits to replace 39.5 percent of gross earnings. [...] don't forget the money you never see - things like the employment tax and possible federal income tax payments.