I can recommend Reptile City at Christies Beach, bought seven pythons from them in the past six months and they have been great and really helpful
I guess it depends where you are moving to in Adelaide as i think there are more but i know of the closest one to me iykwim
Another one is Southern cross reptiles but neither of these are not ones you can just pop to
And there is also Northside pets but no idea what they are like as i have just heard the ad