Amazon has 50-Pack 12"x12" Rubbermaid Microfiber Cloth Towels (Grey) on sale for $9.48 when you check out with Subscribe & Save. Shipping is free w/ Prime or on $25+ or $35+ orders (minimum requirement varies by location). NLA
Lowe’s has the 50-Pack 12"x12" Rubbermaid Microfiber Cloth Towels (Grey) on sale for $9.98 with free store pickup.