How much was a Nintendo controller- by itself- in the 80's?

[superawesomeama]

So would it be safe to say about 25 dollars then?

 

[pepperachu]

probably about the equivalent of 50 dollars today

 

[AllHailKingBooker]

I always thought it was more like $5, I'm not completely sure about that but I do remember the 80s and I would say it was cheaper than 50 or 25$.