To celebrate the device’s first birthday, Amazon has ballooned the number of available Dash Buttons to over 100 with the addition of 78 new participating brands. These are the small buttons that automatically order a given everyday product from with the push of a button. If you’re an Amazon Prime member, each button will cost you $4.99, but you’ll receive an automatic credit of $4.99 the first time you use the button, so they’re essentially free. You will receive the $4.99 credit for each button you purchase, not just the first one, so go ahead and stock up on free buttons for the participating products you order most often. The brands added today include Red Bull, Clorox, Vitaminwater, Arm & Hammer, Brawny, Charmin, Doritos, Peet’s Coffee, and much more. There’s no inidcation that these are the new Dash buttons that just made an appearance in an FCC filing, but it’s difficult to know for sure.