Read the following context and choose the best option to answer the question.
Context: It ended up costing me $ 30 to pick up three boxes which were already paid for in the u.s . ezra was amazed and i was somewhat angry . that they charged and that much . he said that if i have anymore sent to not send them through the postal service but to send them through DHL .
Question: What might the excess charge have been for ?
Options: 
- None of the above choices .
 - Customs duties
 - Parcel did not not contain what was promised
 - Parcel was over stated   weight


Customs duties