Ebay offers 2020 Apple M1 MacBook Air 13.3" 8GB/128GB SSD Refurbished for $354 (reg. $899) free shipping. 

Product Description:
This unit has been professionally refurbished. It has been inspected, cleaned, repaired, and is in good condition. It will show noticeable signs of use including moderate scratching and/or scuffs/dings/dents. Screens may have light keyboard marks as well but this does not affect functionality.