I've got 1 question about this. WORKS ON A 3 PHASE POWER???
I've read it somewhere that it won't perform so well ...

RM85.00 is still okay. If U go & get a contractor to conceal RJ45 it's gonna cost about RM80.00-RM120.00 per point & that's for workmanship only. Branded CAT6 is about RM600+-. If it's 6-10 points & don't mind messy abit then CONCEAL CABLE works best.

I've never get to try it yet. Internet research from what I read works best as below:
BTU<-->BPL<-->Router<-->PC/IPTV
Let the router do it's job. Spread out from there.