Shopping is good times.  "Shopping Addiction" has a more psychosocial perspective when people refer to it though.
I must adsmit that i have never heard of anyone having a shopping addiction.
It's a concept similar to "Compulsive Buying Disorder" which has to do with impulse control more than anything.
Is this type of disorder widespread in the population?
It depends on who is diagnosing them.  Some would say certain addictions are nothing more than behavioral manifestations brought about by ones environment.
so a magician could be a compulsive shopper?  I am afraid i don't understand.
Shopping addiction
Shopping addiction is defined as the deficiency of impulse control which appears as the eagerness for constantly making new purchases of unnecessary or superfluous things. It is a concept similar to "compulsive buying disorder" and "oniomania", although these terms usually have a more clinical approach, related to a psychological individual disorder of impulse control. The phrase “shopping addiction” usually has a more psychosocial perspective . or it is placed among drug-free addictions like the addiction to gambling, Internet, or video-games.
and psychiatry. Shopping addiction was considered an individual disorder of impulse control or obsessive compulsive disorder, and its higher incidence rate in women and its relations with depression problems were emphasised.
Psychosocial approach : Since the 1980s a significant increase in the number of people with important problems of lack of control in shopping and spending has been established. Given the fact that this increase was parallel with the spreading of the values and behaviour of the consumer society, these disorders started to be considered as an individual manifestation of a general social problem