As one of its daily deals, That Daily Deal offers two Hollow Foam Rollers for $9.99 plus $1.49 for shipping. That's $5.74 per roller, $4 under last month's mention, and the best deal we've seen. (It's the best deal we could find now by $56.) They measure approximately 14" wide and can be used for fitness, therapy, or massage. Deal ends February 20. Note: It ships in random colors.
You very likely are putting your laptop battery into an early grave.