The phrase "a thousand different varieties" is correct and usable in written English.
It can be used to emphasize the vast number of options or types available in a particular context, such as food, plants, or products.
Example: "The market offers a thousand different varieties of apples, each with its own unique flavor and texture."
Alternatives: "countless different types" or "a myriad of varieties".
One thing that occurred to me is that young people have grown up in an era of consumer choice; when they can order their coffee from Starbucks in a hundred different varieties.
The Cotswolds are responsible for more than a hundred different varieties of cheese, including the fantastic goats' cheeses from the Windrush Valley dairy; creamy organic Cotswold Brie made by Simon Weaver of Lower Slaughter; mild and crumbly Single Gloucester made of Gloucestershire cattle milk from Godsells Cheese; and St Eadburgha – reminiscent of Camembert – from Gorsehill Abbey.
In the early seventeenth century, Parkinson helped to ensure the popularity of the daffodil as a cultivated plant by describing a hundred different varieties in his Paradisus Terrestris (1629), and introducing the great double yellow Spanish daffodil (Pseudonarcissus aureus Hispanicus flore pleno or Parkinson's Daffodil, see illustration) to England.
(The Detroit News) In a test using a Honda Accord, a Toyota RAV4 and three different varieties of the Ford Fusion, Consumer Reports found that reducing highway speed from 75 miles per hour to 55 m.p.h.
(After he told me this story, this same friend asked if I cared for some, because he happened to have a prescription for two different varieties — one to help you sleep, and one to help you not sleep).
The grape marc contained a mixture of four different varieties, namely Prosecco (Vitis vinifera cv. Prosecco), Moscato (Vitis vinifera cv. Moscato), Raboso (Vitis vinifera cv. Prosecco) and Nebbiolo (Vitis vinifera cv. Nebbiolo).
Dr. Corkin, Dr. Ziegler and their colleagues developed a way to use four different varieties of M.R.I. — each using different settings on the same machine — to come up with four different images that could be used to form one image that showed structures deep in the brain like the substantia nigra, long known to be important in Parkinson's.
It is very interesting to observe that different herbivore species (CWB and DBM) induce a different response in the same plant cultivar (cv Shikidori) and that the same herbivore species (DBM) induce a different response in two different varieties (cultivars) of B. oleracea (var capitata cv Shikidori and var. acephala, kale).
In the US, the turkey is registered as a single breed with eight different varieties as defined primarily by plumage colour.
Actually a catch-all term for eight different varieties of carp, including the common goldfish, and silver carp, known for their tendency to jump -- high -- when spooked by boats.
