Greektown Casino in Detroit has a 1/2 NL with a $50 min and $100 max. They charge $6 every 30 minutes. It's also a "freezeout," which means once you buy in you can't reload until you go broke. Don't ask. I have no explanation other than the people there have no clue about poker. Obviously paying $12 an hour and the "freezeout" structure makes the game pointless.