Jack's Men in Suits Box Set

A five book box set drawing on Jack's time as a salesman in The City of London, where finance was king, and men in suits abounded. The box set includes:
In X Change, where unscrupulous salesman Max meets his match when trying to close the deal of his life.
Mastered, where sales manager Clyde cedes total control to a Swiss private banker.
The 6:15 to Bondage, where Rory has a brief encounter on the train, with a man who turns out to be the director of sales in the company he's just joined.
The Office Stud, where sales manager Gareth has a cunning plan to snare a new employee who happens to be straight.
The Secret Club, where salesman Jack makes his target and goes to Barbados, where he finds there is a club within 'The Club'.