"a lavish amount" is a correct and usable phrase in written English
It means a large or excessive amount of something. It can be used in various contexts, but it is most commonly used to describe extravagant or excessive spending or use of resources. Example: The company spent a lavish amount of money on their annual holiday party, including hiring a famous musician to perform. In this example, "a lavish amount" is used to describe the large and extravagant amount of money spent on the holiday party.
The simple dish, whose secret lies partly in the lavish amount of butter, merrily survived the change.
The lavish amount invested in the marijuana penny stock market ultimately got lost by hopeful investors: thanks to insanely accelerating "pump-and-dump" schemes which were apparently provoked by the push for the legalization of the drug across the country.
The average teen girl would be led to believe that teen pregnancy doesn't ruin adolescence, but instead brings lavish amounts of attention, an adoring and adorable teen father, and an endless supply of parental support.
Due to a collapse of the national economy coupled with lavish amounts spent on its construction, the Basilica was criticized: it was called "the basilica in the bush" by several western news agencies.
Commercial versions are prepared with lavish amounts of corn syrup and an army of stabilizers to give them presence and flow.
Since the late nineteen-seventies, when I lived in Cairo, Egypt has been receiving lavish amounts of Western aid, including some two billion dollars a year from the United States.
The facade, now covered by a sidewalk bridge, is adorned with garlands, Ionic columns and a Juliet balcony topped by a scallop shell; inside the 8,000-square-foot 8,000-square-foot 8,000-square-footmounts of bleachomemaregany paneling.
Part of the reason for both these facts is the taste among the late Anglo-Saxon elite for embroidering using lavish amounts of precious metal thread, especially gold, which both gave items a magnificence and expense worth recording, and meant that they were well worth burning to recover the bullion.
Most important, though, the United States committed lavish amounts of crucial resources to its postwar occupations: personnel, money and time.
It's been little more than a month since the last major gift-giving celebration, but it won't have escaped your notice that stores are once again sporting lavish amounts of heavily themed wares.
