英语翻译1.本报盘以收到你方订单时,货未售出为有效2.未确保早日交货,我们附寄西雅图银行汇票一纸,计3000美元3.请在

请外教给看了一下,估计下面的译文能准确表达你的意思.
1.This offer is valid subject to it unsold when receiving your order
2.To ensure prompt shipment,we enclose a draft issued by Bank of Seattle with amount of USD3000.00
3.After deducting your handling fees,please credit the balance amount to our 1008 account
4.We have received notice from the local shipping line that M/S Chang Feng is estimated to depart for Marseilles around the 5th of the month.