do a roaring trade in a sentence

• There are plenty of fringe projects that do a roaring trade.
• They do a roaring trade, but are closed down by the Irish authorities.
• Pirates bring in their booty to be sold to the black market, northern traders frequent the place as a rest stop on their way to the aforementioned Ten Towns during the warmer months, ready to buy exotic scrimshander ornaments, several taverns do a roaring trade in ale and other spirits, the drugs and slave trade are rife ( although obviously sublimated ) and information brokers and prostitutes ply their trade during the night-time.
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