This is a great offer that gets you a 20% discount and then some. If you have any Amex Offers left you get another $10 off or 1K Membership Rewards points, or you can go with a Chase Ink Plus/Cash card for 5X Ultimate Rewards points.
The offer is available till 12/23 but Office Depot has been known to end some of their good deals much earlier.
Based in NYC. Points/miles enthusiast for years and actively writing about it for the last two years at Danny the Deal Guru. I'm always looking out for deals. Making a few bucks is always nice, but the traveling is by far the best part of this business.