Staples offers the Post-It Super Sticky Note 3x3" Pad 10-Pack, model no. 654-10SSCY, for $10. Add it to your cart via Auto Restock to drop the price to $9.50. With free shipping, that's the lowest total price we could find by $6, outside the below offer. Each pad contains 90 sheets. Deal ends March 25.
A close price: Amazon offers it for $10 with free shipping via Prime.