The phrase "are only valuable" is correct and usable in written English.
You can use it to emphasize the value of something that is important to you. For example: "My family and friends are only valuable to me."
Orders are only valuable if they are paid for.
A large number of them have been given a hard lesson about how scarcity can temporarily drive up prices, but that many assets -- be they Pokemon cards or technology companies -- are only valuable if sold at the right time.
"They are only valuable in this cultural and political context," he added, contending that Qataris often lacked the skills, education and qualifications to be competitive in many other economies.
As long as we continue to drool over images of girls under sixteen, we reinforce the assumption that women are only valuable when they are young, and that these girls are fair game for sexualisation.
Therefore, our results and conclusions are only valuable when considering the present clinical algorithm.
In Leica's case, it's the removal of features that surely are only valuable to the hoi polloi — video?
"An old pipe is only valuable if you create new value".
It's only valuable if you can get someone to pay you".
Another interpretation is that choice is only valuable where a range of good, safe options is available and at least one fits the chooser's particular wishes.
This is all good except when some technologists think that creative content is only valuable in its ability to show off their wares - hard or soft," wrote Bono.
However, that speed is only valuable when teams leave him in one-on-one situations like the Denver Broncos did in the Divisional round.
