Sentence examples for varies widely from inspiring English sources

"varies widely" is correct and can be used in written English.
It is used to describe something that changes or differs greatly in different situations or contexts. Here are some examples: - The prices at this store varies widely depending on the time of year. - The effectiveness of this medicine varies widely from person to person. - The weather in this region varies widely from day to day. - The quality of education in different countries varies widely. - The opinions on this topic vary widely among experts. - The level of difficulty for this test varies widely among students.