заработать огромные деньги(They wanted him dead because he didn't know his place. There was so much anger against him... He [JFK] came from a wealthy family, his father made a tremendous amount of money. ART Vancouver)
небольшая сумма("If you can paint well yourself, rather than paying a professional, then go for it. Painting's a good way to bring impact on a small amount of money." (Jamie Banfield) – за небольшую сумму ART Vancouver)
неустановленная сумма(n unspecified amount of money is one which is not precise. For example, if you are claiming damages (compensation) for loss or injury, you might not be able to work out exactly what those damages are [worth]. LT Alexander Demidov)