but indeed there's a lot of stock with super low price tag in alibaba is it real?
No, those are scams. Don't send them money if they only accept payment via MoneyGram or WesternUnion.
Maybe some of them are scams. I only use one that accept payment via credit card. And I've had no issues as of yet.
Ali baba is the biggest market place I think in the world now. Its China's Amazon+Ebay.