Amazon offers the
Finish Quantum Max Shine and Protect Dishwasher Detergent Tablet 64-Pack in Fresh Scent for $10.10. Check out via Subscribe & Save to drop it to
$9.60. With
free shipping, that's about $4 under the price you'd expect to pay at your local store.
Be sure to cancel Subscribe & Save after your order arrives to avoid being billed for subsequent shipments.