Okay, so I'm very noob at this whole thing. I'm planning on getting the S8 but I don't know whether I should just pay for the full retail price at an official authorized Samsung store or get it cheaper at Lowyat. I want to buy it by today and I was wondering how all these phone shop booths work at Lowyat work and how they're selling their phones cheaper. They claim that they're all original and warranty by Samsung but can someone explain to me in full detail about this whole thing on whether I should get the phone cheaper at a booth or a samsung store?? ELI5

RM3299 retail vs the RM2840 random lowyat booth

What's the difference? Why is it cheaper?