I doubt that the products themselves (unless the products are some kind of electronic document) are actually attached to the email - do you mean the information or details requested about the products?
I'm also uncertain what you mean by what you want to say with the prices matching, so my corrections on that sentence still don't make complete sense.
I suspect you mean something other than 'negotiation', as well.
If you'll explain the situation more clearly, we can help you re-write the letter more accurately.
Student or Learner