'is a considerable sum' is correct and usable in written English.
It is used to mean that an amount of something is large or significant. For example: The $10,000 worth of donations is a considerable sum.
Even in an economy where the G.D.P. is more than ten trillion dollars, sixty billion dollars is a considerable sum.
Wenger went shopping 12 months later and paid what for Arsenal is a considerable sum — around £18 million, or $29 million — for Cazorla.
It is a considerable sum, certainly more than any other European league donates, even if £160m will be in parachute payments to relegated sides.
That is a considerable sum given that last year Ronnie Lott, left, who founded Champion with Harris Barton, raised $40 million from football stars like Keyshawn Johnson and hockey players like Wayne Gretzky.
That is a considerable sum given that last year Ronnie Lott, the football hall-of-famer who along with Harris Barton founded Champion, raised $40 million from football stars including Keyshawn Johnson and hockey players like Wayne Gretzky.
The BBC refused to divulge how much it will spend on the facilities, saying it was "commercially sensitive" but the executive board has approved the terms, suggesting it is a considerable sum.
The fee is well above average even today, and back then it was a considerable sum.
The spokesman, John Beckman, said it was "a considerable sum," not hundreds of thousands of dollars.
Mr. Schaitberger declined to say how much the group planned to spend, other than that it would be "a considerable sum".
But whatever it was it was a considerable sum.
Still having no real idea of the value of the win, we phoned the lottery hotline and were staggered to discover that it was a considerable sum.
