the best way are.
buy phone from the phone shops ,
buy memory card from memory card dealers.
even cases@covers too.
a bit work but price better.

if you find it different, you can always rejected it.
its not for online seller only , even real shop selling different quality
the best is to look from their own appointed dealers

if original set Samsung phone selling at RRP price at Samsung own shop, other shop can reduce same item for much more lesser, we can spend the difference for something else

its out region by region.
Malaysia region soon.

do check with Samsung Malaysia Electronics
if you have time, they can help you with the installation of updates too