This is new. Also interesting that they are offering this deal on the tap and not the regular echo. And that they are offering this deal about a week after they enabled hands-free mode on the tap. I think this must be aimed at college students. And baristas. Or their parents.
So it’s the regular price, $130, but you can pay in five equal payments of $26 a month. ( The monthly payment option is shown just below the regular price in the product description). No idea how long this will be offered for.