"valuable purchase" is a correct and usable phrase in written English.
You can use it to refer to an item that is worth a lot of money or is of great value for a reasonable price. For example, "He was proud of his valuable purchase of an antique vase."
It may be a treasured heirloom, or a valuable purchase worth tens, or even hundreds of thousands of dollars.
Pop down to the supermarket and grab some mould remover spray; it will become a valuable purchase when cleaning up the house.
He said that he filed for bankruptcy in 2013 because his landlord was seeking to terminate his mid-Wilshire lease over "one month's late rent payment". The real incentive, he said, was the lease's valuable purchase option.
We have to treat it as a valuable purchase.
We ransacked the small general stores of Paro for folding umbrellas, which would turn out to be valuable purchases.
Our goal here was to get Affluents to become Champions by encouraging them to refer more new customers while maintaining their highly valuable purchasing behavior.
Last year will go down in history as the point at which the UK videogames industry pulled decisively away from cinema, recorded music and DVD sales to become the country's most valuable purchased entertainment market, with combined software and hardware sales topping the £4bn mark for the first time: more than DVD and music sales combined, and more than four times cinema box office takings.
The average fixed-income investor has lost to inflation, losing valuable purchasing power.
By basically harnessing the passion and ire of fanboy throwdowns in order to give people actual, valuable purchasing advice.
So far, Facebook is winning out over Pinterest in terms of driving more valuable purchases, at $108.41 per order compared to $102.61 per order for Pinterest.
Since arriving at the company, in 2012, Mayer has been trying to make it more valuable by purchasing smaller firms that she hope can bring Yahoo better talent and products and a bigger audience — and, in turn, more revenue.
