Taco Bell is introducing its new $5 Taco Discovery Box, featuring the Cantina Chicken Crispy Taco, two classic tacos, and a medium fountain drink. The box will be available every Tuesday until June 4th. Additionally, Taco Bell is bringing back the popular Secret Aardvark Nacho Fries on April 25th for $4.99. Customers can get both the Discovery Box and Nacho Fries for under $10.