Problem with buying marble from china is you can only view photos. Marble has a lot of veins and the real one can look very different from photo due to lighting.

For best value, I would advise going to a marble/stone factory to see their slabs. Lots of these near subang airport. Can see and select marble or granite or others and choose the slab you like. They will cut/polish/edge to your liking, with delivery and installation. Prive can vary from few K/slab to few 10k/slab

But for the leg, best is source from china/taobao. You can also try to find locally, but hard to find a modern and nice design. The stainless steel ones are especially nice, but also not cheap.

Combine these, you will not likely find a new piece ready made real natural stone table in Malaysia in better value.