I generally sell them straight to stores.
Though lately I've found that once my guys have been brought to the store they get less handle time.
I try to handle everyone twice a day. This way they are more friendly and less likely to be scared.
A scared gerbil leads to a bitten human.
I've decided that my guys deserve a more personal touch.
Here are some pictures....
3 weeks old 
4 weeks old 
A few minutes old. 
Amy 1year. 
Donna 1year. 
Captain Jack 6 months. 
Rose and Donna 5 months. 
Amy having a run around. 
Doctor playing on his wheel. 
A ten minute old baby. 