Do a roaring trade (in something) British informal
To sell a lot of goods in a short period of time
Alison's done a roaring trade in second-hand clothes and helped her family to overcome the poverty.
Yesterday was a heavy rainy day, so Lee did a roaring trade in umbrellas.
The verb "do" should be conjugated according to its tense.
people often do irrational or foolish things when they are in love.
I and my boyfriend have decided to get married in the summer. I don't think that's wise, since we won't have enough money saved by then to set up house. But then, one cannot love and be wise.