A few weeks ago I was all ready to buy a Galaxy Tab from a friend in work, he had just purchased an iPad and felt no need for it any longer. I thought about it for the day and decided I was effectively buying it for the sake of it and didn't actually need it so I ended up not but I have done my fair share impulse buys in the best. Do you tend to buy on impulse? Do you feel guilty for it afterwards or keep hold of receipts just in case you change your mind?