Insurance cover under Tranferable credit

Hi Experts,

I have got a transferable credit arrangment for a deal, where the buyer wants the complete insurance coverage of the goods supplied. At the same time i dont want to disclose the selling price of the material to the supplier from where i procured the goods for sale. now i find it tough to save my interest because i dont want to lose the supplier or the buyer either for future prospects. Should i talk to the supplier that only i will present the whole documents to bank? Kindly suggest what to do?

Manish