on the cheap

(live / travel / eat) on the cheap (cheaply; not expensive) — скромно, небогато, не шикуя; на скудные / скромные средства;| по дешевке (buy /fix sth on the cheap)

Example 1: Most college students live on the cheap. They eat cheap food, buy cheap clothes, and live in cheap apartments.

Example 2: Look, I know this is a dirty trick to play on Randolph. But that's the business world. I want his mission to fail so I can buy out his company on the cheap. (Ben Bova, "The Precipice")

Related vocabulary:
[on a shoestring]
[tighten one's belt]

[for a song]
[dirt cheap]