Today the Chicago Groupon is to pay just $9 for a 3-Day CTA Pass ($14 Value). They’ve already sold 25,000 of these because it’s such a hot deal!
This Chicago Transit Authority pass grants unlimited rides on buses and trains within the city and 40 surrounding suburbs. Expires Sep 3, 2013. Limit 4 per person. Must activate by expiration date, pass expires 72hr from activation date.