I'm addicted to a site called RedFlagDeals, which is the equivalent of Slick deals for the states. I find myself endlessly scrolling for deals on the forum and buying things I probably don't even need, but I do it anyway since the item is relatively cheap. For example a car charger that was like 10 bucks... and I don't even have a car.
I think it's out of boredom as well, and it's gone to the point where I could even tell you a specific product is a good deal or not just by looking at the current price of it as I probably subconsciously index all of the prices in my head some how from scrolling through it.