美国采购需求：音乐盒机芯，木质音乐盒，雕刻音乐盒，婚礼回礼音乐盒，玩具音乐盒，塑料音乐盒

I'm interested in purchasing music boxes in bulk, specifically starting with 100 units split between two different melodies (50 each). As our business grows, we plan to increase our order sizes. I would really appreciate your guidance on the ordering and delivery process for these items. Additionally, I'd like to know about your pricing structure, minimum order quantities, and any available customization options. Our location is in NY, US, so I'd also appreciate information on shipping timelines and costs. Thank you!