Map and accessing?

#include <map>
#include <iostream>
#include <string>

class sizer {
     public:
          sizer(){
            std::map <std::string, std::string> price;
            std::map <std::string, std::string> size;
            std::string part1 = "1450A";
            std::string price1 = "40.65";
            std::string dim1 = "7,34 1/2,3 1/2,";

            price[part1]=price1;
            size[part1]=dim1;
            };
          void accessPrice(std::string part){
            std::cout << price[part]; // I want this to print out the price for the part passed to it but it doesn't work.
            // What do I need to do to make this work?
               return
          }
};