Sorry for the late reply and many thanks for your help on this, it took me quite awhile to replicate what you have done on the raw dataset that I have, this fits in quite well with what I needed. The only thing is that I think it would be more useful if the data is based on percentile of total itemA pirchase. I notice this relates to support and confidence level, however I couldn't find/get my head around how to achieve this. Some pointers would be greately appreaciated. Many thanks again for your help.