澳大利亚采购需求：苹果小屋，集装箱房屋，可扩展房屋，单体钢别墅，太空舱

I am interested in placing an order for a 10 by 6 meter layout that includes 2 bedrooms, a kitchen, a shower, and a toilet. Could you please provide me with details on the minimum order size required to qualify for a price break? Additionally, I would appreciate any information on bulk pricing and lead times for production. Understanding your pricing structure will help me plan accordingly. Thank you!