A business development representative can represent a busines as long as the business is based on a profession and relevant qualifications. Otherwise can not because can be accused of an artificial vancancy, an arificial cashflow to do a fraud.
An industry according to a technology can have a verification in a correct manner based on SEO.
For a sales training you can go here.
Be positive and connect on Facebook to ask relevant questions.
In terms of a value, the value of a product is worth... well, a cost of production, and... you can be taught what else is accountable.