I love these type of coupons! You can use code GET4BTS to get $10 off any $10 purchase online at JCPenney.
Remember to go through Ebates to get 5% cash back on your purchase. If you're new to Ebates you'll also get $5 just for signing up! Ebates is a cash-back shopping site. You just log on to them and then access your favorite retailers through them. You'll then get a percentage back of your purchases.
The $10 JCPenney coupon code excludes shipping but this is still a great deal. You can use the coupon in multiple transactions but not more than once in the same transaction. The coupon code is valid through August 22, 2009 so you have time to carefully think out your strategy!