While the free-to-play model has often looked to the more serious purchaser to drive profits (the much-sought "whales"), the idea that most initial sales are made at a steep loss in the hope of up-selling customers is pretty scary when 97percentt of players already never pay a dime.
Sometimes, as with corn or cassava, direct competition between purchasers drives up the prices of biofuel ingredients.
That stopped when a purchaser-driven organization, The Leapfrog Group (my organization), started reporting early elective delivery rates by hospitals in 2010.
That would be easy to accept if it sold its software to a purchaser and then drove away from the scene of the sale.
"The rural property market is being driven by cash-rich purchasers, and the gap between top and bottom-end properties is widening significantly," says Sharon Hamilton.
Although HMOs first emerged in Nigeria to supply PHI, their expansion was driven by their role as purchasers in the government's national health insurance scheme that finances SHI programmes, and facilitated by a weak accreditation system.
"They are driven by the relevance to the purchaser.
"Driven to a great extent by City bonuses and overseas purchasers, the top end prime markets are less sensitive to the cost of borrowing," Savills pointed out.
He admitted parts of the market in the capital are still being driven by cash transactions, mainly from foreign buyers and buy-to-let purchasers.
That measure, as well as the UN's new policy of setting the price that purchasers must pay for Iraqi oil some weeks after they have bought it, had driven away all but the shadiest of customers.
Adele, currently fielding offers for a high-profile UK television return, is one of the few global names guaranteed to drive casual purchasers into the remaining high-street record stores.
