He is a Crude Oil Buyers' Mandate for several giant U.S. and European crude oil and petroleum products buying houses and refineries, and a Consultant, as well, to private investors, entrepreneurs and corporations on how to obtain genuine crude allocation and license with the Nigerian authorities to become an authorized seller of Nigerian crude oil. He has been severally dubbed the "unofficial anti_scam czar" and the "conscience of the business" in the modern Internet petroleum trading market.
If what you want is a quotation or offer, then sending a letter of intent makes you look ignorant while requesting a quotation will generally at least make you look like you know what it is that you want. And what you want, after all, is a price quote. Hence you want to request a price quote, via a request for quotation.