Pricing module

    String key;
    String stock_full_id;
    String state;
    /**
     * suggested by the artist or the seller
     */
    String currency;
    /**
     * suggested by the artist or the seller
     */
    int baseprice;
    /**
     * the most currency updated market price suggested by the system
     */
    int price;

    /**
     * rational updated by the equations
     */
    String estprice;
    
    int license_price;
    int print_limit;
    float factory_shared;
    float printed_shared;