Maybe it's buying that yellowfin tuna knowing it's overfished. Or that bulk buy AA batteries when you could just keep up the recharge program. The new car when you could spend more time looking for a bargain used one. The sandwich from the local deli at work when you could of made your own. 98 RON petrol. VPN membership. Bottled water. I don't know!
Tell us the top thing you hate buying…
but you do so anyway.
Clothing. HATE clothes shopping. End up buying the same thing in 5 colours and 2 sizes online then return ones don't want.