I bought these on Amazon to avoid the unreasonably high markup on the exact same product in retails stores (CVS, supermarket, etc). I received exactly what was advertised, and fit my needs perfectly. The only potential downside to the product is the dispenser. I don't particularly like the way the tabs are dispensed, but it's more of a personal preference thing.
They're resilient to re-use, brightly colored, very sticky, easily removable, appropriately sized for 8.5x11 pages, easy to use, and competitively priced (not reasonable, since I don't understand why sticky pieces of plastic are so expensive anyways, but the cheapest option available none-the-less).