The phrase "a paying proposition" is correct and usable in written English.
It can be used to describe a situation, offer, or business deal that is financially beneficial or profitable.
Example: "After reviewing the terms, we concluded that this partnership is indeed a paying proposition for both parties."
Alternatives: "a profitable deal" or "a lucrative opportunity".
Unlike most of them Coldstream is a paying proposition.
Mr. Solotaroff believed, incorrectly, that this formula could be a paying proposition.
One of many handicaps Bangladesh faces is that other nations, increasingly driven by commercial priorities, do not see matches against it as a paying proposition.
You can't blame Peugeot for wanting to make Citroën a paying proposition, but it's a shame the past was so decisively denied when it is that past which gave Citroë*its reason to exist.
He was confident, as The Straits Times in Singapore reported in July 1932, that "although to start with the service will be a losing concern, within a short period the commercial community … will appreciate the service and begin to use it, and thus enable the company to make it a paying proposition".
Mr. Steiner deserves to be nicknamed "Mr. Strainer" for straining money out of trash and making waste management a paying proposition.
Debo, the youngest and the one most bruised by her older sisters' notoriety, is seen as inheriting her mother's role as mediator, keeper of the Mitford peace and flame, and of course as the chatelaine of the great Derbyshire house, Chatsworth, which she and her husband rescued from the rigors of taxation and dilapidation by turning it into a highly paying proposition.
To take the obvious, painful example: news organizations, very much including this one, have spent years trying to turn large online readership into an adequately paying proposition, with limited success.
Personal example is the only paying proposition in such circumstances".
It is also sweet revenge, given that Grand Central was almost lost in the nineteen-seventies, when the struggling Penn Central railroad commissioned Marcel Breuer to turn its financially draining terminal into a paying real-estate proposition by putting a huge skyscraper on the roof.
Plus, having a paying customer validates the value proposition.
