Why Shopee is more expensive than Lazada even from same company?

I want to buy Samsung computer monitor. I compared between Shopee and Lazada from same company. I noticed that Shopee is more expensive compared to Lazada.

Of course, I don’t take into account any discount provided by Shopee or Lazada.

Samsung Monitor 27 inch from EIT Store

shopee samsung monitor eit store more expensive than lazada
shopee samsung monitor eit store more expensive than lazada
lazada samsung monitor eit store cheaper than shopee
lazada samsung monitor eit store cheaper than shopee

Product link Shopee

Product link Lazada

Lazada: RM637.90 (monitor) + RM6.50 (delivery) = RM644.40

Shopee: RM695 (monitor) + RM5.60 (delivery) = RM700.60

Lazada is 8% cheaper vs Shopee.

Samsung Monitor 27 inch from CS Computer Shoppe

shopee samsung monitor cs computers shopee more expensive than lazada
shopee samsung monitor cs computers shopee more expensive than lazada
lazada samsung monitor cs computers shoppe cheaper than shopee
lazada samsung monitor cs computers shoppe cheaper than shopee

Product link Shopee

Product link Lazada

Lazada: RM639 (monitor) + RM11 (delivery) = RM650

Shopee: RM659 (monitor) + RM3.20 (delivery) = RM662.20

Lazada is 2% cheaper than Shopee.