This deal has ended.
The best deal on The Economist, one of my favorite magazines, is at Magazines.com where 26 issues are $55 after $5 off coupon (code summermags) through 8/15. This comes to $2.11 an issue. You can also buy 8 issues for $20 ($2.50 an issue) but the coupon won't work to cut that to $15. The weekly is a steep $5.99 at newsstands and most subscription options aren't much better.