请问这是骗子吗?

外贸新人一名，目前遇到一位加纳的客户。说自己是贸易商，给政府事的。要我们先交250usd作为中介费，他才把我们的产品报价交上去政府… 原文如下： meanwhile we shall be looking up for a huge quantity order and also the registration fee is to be paid when am submitting your bidding documents to the consignee. they will not accept your document without the registration fee, it is their laid down proceedure and terms of services and you will be rest assured to handle the order as their sole supplier. 求大神指导……