I just bought their 6 pack that normally is $179, but currently on sale for $119. Let’s see 119 divided by 6 is about 20. Yep, gotta buy a hub or a low end kit to get started. But I have them everywhere now. Love them. Sorry, it sounded misleading.
Every time that I have looked at their buttons on Amazon, Amazon is much higher. This is one of the few products that I buy from the manufacturer site vice Amazon. 
Good idea. Now that we can apply more than one name to an Alexa routine, I can use the button and a named routine by its name.