Yes!! Individual volumes are on sale at both Comixology and Amazon. Volume 1 is $2.99 and the other volumes are $4.99 each. Comixology has a Volume 6,7,8 bundle for $9.99 as well.
Volume 1: https://smile.amazon.co
Volume 2: https://smile.amazon.co
Volume 3: https://smile.amazon.co
Volume 4: https://smile.amazon.co
Volume 5: https://smile.amazon.co
Volume 6: https://smile.amazon.co
Volume 7: https://smile.amazon.co
Volume 8: https://smile.amazon.co
Volume 9: https://smile.amazon.co
Volume 6,7,8 Bundle: https://www.comixology.
Happy reading!