The rule says if the item you want is so cheap it makes you rub your eyes to see if it’s not a dream, then the chances are something’s wrong with it. Like those stunning sneakers you saw the other day. Look at the swoosh, read the brand name carefully, and never underestimate the power of the label. If suspicion, aka your gut’s best friend arises, you're better off without ‘em. But hey, some knock-offs don’t even bother concealing the fact. Welcome to the land of totally shameless and impossibly crappy fakes that are way off whatever they were trying to pull off initially. Thanks to the subreddit Crappy Off Brands, we now know what to expect shopping under the counter, and hey, this bootleg Roomba that came at a fraction of the price is the exact reason why it bears solidly zero vacuuming powers.