法国采购需求：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 hope you can assist me with some pricing details for your crank mechanisms or similar products. I'm interested in knowing the cost for an initial order of around 50 units. Additionally, it would be great to get a list of the available music options that come with these mechanisms. Since I'm based in France, I'd appreciate any information on shipping processes or lead times as well. Looking forward to your prompt response so we can proceed with the order. Thanks!