Language of Math of Science of Play of Work

A chapter:

Characters: Corporate top bosses from the Buy department and a Regional team from the Sell Department.

Plot-line: Sell has re-sold something which Buy has not bought yet. Sell has earned a margin (a percentage). No one knows the Buy Price but we have a Sell Price and claim to have a Margin.

Story: Any Indian kid with middle school Math background can back-calculate what Buy Price can be. Sell confidently wants to solve for x.
The catch however is, first it is Buy who needs to buy at x, and then that can be sold at a Margin Sell claims to have made, by selling at Sell Price.

Charming side hero Product guy tries to dumb it down for Sell. Regional Sell is a fan of Corporate Product guy. Corporate Product guy is a Marketing person.
To customers- Product guy sells his product as an idea.
To Sell- Product guy sells incentives to sell that idea to those customers.
Product guy is the 'ultimate seller' as he sells selling to Sell.

This time the product to be sold is a product Product guy wants Buy to buy so that Sell can resell. So you calculate Sell Price, and not back-calculate Buy Price.

What if Buy ends up buying it at more than x? The margin then would be less than the Margin Sell is proud to have achieved, because Sell Price has been fixed as sale has been made.

Sell is furious because ultimate seller Product guy is speaking about buy, which is gibberish (and betrayal) to Sell because what is being bought?
"Product guy gives product and I sell". 
"Customers talk about buy and now my Product guy is talking about Buy too. I hate Buy which means Buy department is the villain". 
"I have sold and earned Margin and I deserve incentives, not this questioning from crazy Buy department on what did you sell when no one has bought it". 
"A product-seller is asking for money and Buy is not paying because Buy did not buy. Who is this product-seller? Because I am seller of this product"!

Another work-day ends.