哥伦比亚采购需求：遥控卡车、儿童玩具、无线电控制卡车、卡车玩具、遥控玩具、遥控怪物卡车

I would like to request more detailed information regarding the cost model for your RC products. Understanding the components that contribute to pricing will help us assess and plan our procurement strategies more effectively. Could you please provide a breakdown of the costs involved, any volume discounts, and lead times? Additionally, insights into any potential for negotiations based on large orders would be greatly appreciated. Looking forward to your detailed response.