I went to their actual building location. Frankly speaking, I'm quite keen to get this for my first property. But no one knows the actually selling price.

I have heard rumours that although it has yet to be officially launch, the first block (there are 2 blocks) are fully sold out. Goes to show the level of reputation and prestige that See Hoy Chan carries.

I think rental yield will be quite low considering with a MYR450psf price tag, you need at least 3k for the smallest unit to make it worth while. As for capital appreciation, the current price is already a premium. Hence I highly doubt you could get much.

If I have a matrix to score this project :
Potential Rental yield : Low
Potential Capital appreciation : Low
Location : Medium (its Happy Garden, no special)
Accessibility : Medium (so far there is only 2 way, one in particular is pretty small)
Access to public transport : None! (no way you can walk or take a bus to anywhere)
Comfort : HIGH!!! (its a luxury condo man!)

Open to others opinions.

Haha that is just my personal opinion, but I gave a conservative approach for my analysis.
But having look at the area again, I think I'll put accessibility as HIGH. Considering that it is between MEX Highway and Bukit Jalil. With the highway, you can reach anywhere easily without any jam. Only downside is the toll...

Based on what you said, I guess this property doesn't make much sense for investment wise.
Considering that the price is on the HIGH side and accessibility is so-so. Yet many are trying to purchase it, I guess it is mostly hot money.