Amazon has 6-Pk Amazon Basics Non-Scratch Sponges for $3.65 when you checkout with Subscribe and Save. Shipping is free with Prime or on orders of $25+.
Includes 6 non-scratch cleaning sponges
Safe on non-stick cookware
Scrub on one side, wipe on the other
Tough cleaning power for everyday jobs
Clean in the dishwasher and reuse