36-year-old Lee Paul, from Brynmill, was seen jumping out of the window of his address while police were passing his home while investigating an unrelated matter.
Thinking this looked suspicious, officers then entered his address to find large amounts of cannabis and bags containing other white substances, as well as weighing scales with further white power on a weighing plate.
It was later established that Paul was concerned in the supply of cocaine, ketamine, ecstasy, cannabis and alazopram.
He has been sentenced to three years and four months in prison.
Detective Sergeant Luke Tucker from South Wales Police said: “Lee Paul arousing officers’ suspicion through his unusual behaviour in exiting his home address through the window would be laughable were it not for the seriousness of the drugs operation that he was carrying out inside.
“He is yet another individual who thought that he could become rich from this illegal trade. However, all that drugs has done for him is landed him years in prison.”
