diadokmai, yes normal york aircond 1hp is rm750 and 1.5hp is rm1080, also sharp inverter is rm1350. all before installation.
cheapest 1hp inverter is rm990*
ifi used inverter it will be more expensive by rm1350

I am going to use inverter pipe all but not all inverter a/c and my breakdown is like this :
master room - 1.5hp (sharp inverter every used)
room 1&2 - york 1 hp (hardly used)
guess room - york 1 hp (hardly used)
dining and hall york 1.5hp (hardly used)

just to share some pricing with recently order some
Price w/o installation:
Sharp 1HP Inverter/Ion AH-XP10NRV RM1130
Sharp 1.5HP Inverter/Ion AH-XP13NRV RM1350
Sharp 2HP Basic AH-A18NCV RM1650
Fujiaire 1.5HP Ion RM900

just to share, got quoted 1hp basic panny and mitsubishi for rm900 and sharp basic for rm830 inclusive intallation for b2b. but end i opted for fujiaire with ion for rm830 with intallation. hopefully the ac can last.

xerox, after a week i used i think is ok. for the price cant complain much. and it comes with freegift alan delon belt with wallet or you can choose luggage or either deduct rm50 by not taking the freegift.

Any one know what is the price for mitsubishi 1.5 and 2hp? also the piping size for gas? currently using fujiare 1.5hp x2 for the hall dont feel cold enough.

Any one used hi sense before? how is this brand reliability and functionality? Its quite cheap for 1 hp for rm500.