One of the worst-hit industries last year was real estate. With skyrocketing interest rates, fewer people could afford to buy a home. Naturally, all sorts of companies that sell products related to home buying have been negatively affected, some to the extreme. Opendoor Technologies (OPEN 4.65%) is in that boat. It's down 91% from its highs and trades at a dirt cheap valuation. But not all cheap stocks are bargains. Should you buy Opendoor stock right now?Why Opendoor is down in the dumpsOpendoor is an iBuy ...