By this I mean you did no research, you just bought something because it sounded cool / wanted it at the time, only to find out later down the track you got a great deal. Obviously I am not referring to items you purchased from here on a whim, because we have all done that.
I actually can't think of a personal example at the moment but interested in others stories.
Well I bid $10 on a used lounge on eBay. Thought if I win it would just be a temporary solution. Well, no one out bid me and it's still going strong after four years.