Originally Posted by MDtR-Chicago

It's not as good a deal as it seems. You still need to tip on the original price plus many places will redeem these AFTER tax. So you could easily be in a situation where your $50 is worth more like $50-$4.63-$9.83-$4 = $31.54

Now the real TOTAL cost of your meal is more like $83 after tax/tip/cert cost. That's only a deal if you would not have simply gone somewhere else for a $50 meal.