How much does it cost to send a pen (fountain pen weight) from Shanghai to Guangdong by SF air freight? How many days can it arrive?

Shanghai, if it is non-contracted partner is 22 yuan 500g, the partner is 20 yuan 500g, the best bring their own box, the arrival time is not more than 48 hours, the process is Shanghai receipt, sorting, packing, Shanghai Airport to Shenzhen Airport unpacking, picking up, packing and sending to Guangdong, unpacking, sorting, sent to the distribution station, the distribution of assigned distribution staff distribution ... SF! is its own aircraft, so it is to arrive in Shenzhen! Shentong, Yuantong is to rent an airplane to reach Guangzhou, so the time is a little longer, the price is only 15 yuan! Give a best answer to it...