Not sure if this thread is still active. anyway i just call Maha asia parquet and they quoted me this :
Merbau planks 14thk x 71w x 1-4ft L - RM 10psf (for more than 500sqft )
- RM 12psf for less than 500 sqft
upgrade to water based coat - add rm3 psf
upgrade to Bona (??? range) coat - add rm4 psf
underlay cengal - rm3 psf
skirting - 5.50 (3") and 6.50 (4")

How's the price?
is 14mm too thin?
is the water based coat too expensive?

As i m staying in the room currently, can i lay the timber on top of the parquet instead of batten?

thanks!!