Amazon offers its AmazonBasics Microfiber Cleaning Cloth 24-Pack for $8.37. Order via Subscribe & Save to drop that to $7.11 $6.97 and bag free shipping. That's a buck under our mention from a month ago and the best price we've seen. (Most eBay vendors charge around $3 more.) These 12x16" cloths purportedly absorb eight times their own weight.

Note: Be sure to cancel your subscription after receiving your item to avoid being billed for subsequent shipments.