Ever wonder how many hours per week you’d need to work at Costco or Walmart to make a secure but modest living in your city? MoJo has a wage calculator to help you find out.

+ According to the calculator, a family of four could live modestly in San Francisco if the sole breadwinner worked about 172 hours a week at Walmart. That seems low given the latest SF rental numbers.

+ In the United States, Blockbuster went from having about 9,000 locations to going bust. But in Mexico, the brand lives on as an upscale chain.