Likely different sellers. Lazada and Shopee are portals hosting individual competing sellers, just like going to a market and browse different stores selling same products. Remember always to check delivery cost — sometimes a smaller product with a cheap price is more expensive when delivery is added — and warranty, if sold without warranty the price might also be cheaper. Also worth to check seller ratings and reviews. And be aware, if the guarantee is offered by the seller, it might be more difficult, than when a product is bought in a local shop, for a fridge like Power Boy, HomePro, Global House, BigC, and Lotus's, or whatever is available. Any warranty claim to an oline seller, might end as being your own problem to solve.