Im confused about a few things for x460dx

1, I saw there's a SSD version selling in lowyat..but not in the official msi website. Does this means that the seller changed the HDD?

2. Can this model install extra hard disk caddy?

3. what is the SRP for the SSD model (if there is)

4. Current location is at Kampar any dealer there? (I prefer COD)

5. Will the i7 for this model have discrete graphics? It's weird that i5 have GC but i7 don't.

I've did my homework researching about this model