Clee said the sentencing judge had placed too much emphasis on deterrence and denunciation and sought to align his client's case with other Serious Fraud Office prosecutions where home detention had been imposed.
Clee also said that Cooper's wife was due to have surgery, after which she would require her husband to care for her at home.
Justice Sarah Katz, who was hearing the appeal and reserved her decision, said she was "nervous" that Clee was broadening the discussion to the full merits of the sentence given and that it was necessary to identify an error in the approach taken by the District Court judge.
SFO lawyer Todd Simmonds opposed the appeal and said Clee must demonstrate the sentencing judge made an error in exercising his discretion. The test was not whether another judge on another day may have reached a different view, he said.
The SFO lawyer said the argument around the discounts given to Cooper during his sentencing was inviting the High Court to embark on a tinkering exercise that was "entirely inappropriate".