How you recognized the need for this product and the 'evolution process of the need'.
Where all did you search for information, was it a 'conscious' or 'automatic' process.
What process did you follow to evaluate the all the alternative and which variables finally made you decide
What factors facilitated your purchase for example finance/HP, discounts, delivery options, staff help, existing relationship with someone etc.
Did you go through any 'Cognitive Dissonance'? Any other post-purchase thoughts you had for the product