While teaching my students in a elementary school, I asked them to use the question
Could you repeat (that), please?
However, the next day I received a letter from a mother saying the correct form is
Could you please repeat (that)?
I teach in a Spanish-speaking city (This is in Peru, Latin America).
Best Answer
I'd go with both:
Could you repeat, please?
and:
Could you, please, repeat?
The commas are imho crucial.