Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent product, though getting more expensive

Bought TUF Cloth (not the Marine vesion) through Amazon back in April 2009. Each 12x12 cloth came in its own packet, at $6.99 each. Cloths are reusable (packets are resealable). They're as good as Lorenzo says, and I use them on my knives. Leaves an almost impossible to see thin film, cannot be felt, metal surfaces stay protected for extended periods.