Yesterday, I had 2 sausage mcmuffins with egg - $3 plus tax.
I completed the online survey as found on the receipt, and today I had 2 deluxe quarter pounders with cheese for lunch, one of which was free due to the survey, and a large coke zero - $7.
I'm not a fast food person but I was fairly impressed with the quality and taste of the food - and $10 for 2 very filling meals is a good value.
My last receipt also has a survey on it, which I just completed, but perhaps I wait a few weeks to redeem...