How much is the T-Junction unit sell?

You may check with the agent in Kinrara Residence, compare the price with the junction unit, if mkt is selling 15% more expensive, then it is worth consider then junction unit.If less than that, then just buy fr agent those ordinary one. For instance..

2-stry
Developer - RM800K
Sub sale  - RM950 (18.75%)
Better buy fr Developer

if Sub sale 880K - better buy sub sale (11%)

Let me know the built up and total land size. I calculate for you
Building width is 25' right?

Scenario 1 :-

Standard lot = 22'x75'' BU 2488sf
Assuming current market selling 900K
Price per sf = RM900K/2488 = 361.7

End Lot = 27'x75', built up 2970sf
Estimated fair value = 2970 x 361.7 x 1.07 = RM1,149,446

Fair T-Junction discounted price = RM1,149,446 x 0.88 = RM1,011,512

Conclusion : If you find that most of intermediate price "transacted" at 900K , then anything below than RM1,011,512 offered by developer is good buy.

Scenario 2 :-

Standard lot = 22'x75'' BU 2488sf
Assuming current market selling 950K
Price per sf = RM950K/2488 = 381.8

End Lot = 27'x75', built up 2970sf
Estimated fair value = 2970 x 381.8 x 1.07 = RM1,213,426

Fair T-Junction discounted price = RM1,149,446 x 0.88 = RM1,067,815

Conclusion : If you find that most of intermediate price "transacted" at 950K , then anything below than RM1,067,815 offered by developer is good buy.
Scenario 3 :-

Standard lot = 22'x75'' BU 2488sf
Assuming current market selling 850K
Price per sf = RM950K/2488 = 341.6

End Lot = 27'x75', built up 2970sf
Estimated fair value = 2970 x 341.6 x 1.07 = RM1,085,697

Fair T-Junction discounted price = RM1,149,446 x 0.88 = RM955,413

Conclusion : If you find that most of intermediate price "transacted" at 850K, then anything below than RM955,413  offered by developer is good buy.
BTW the "nett" selling price is 1.07 mil or 980K? If it is 980K, my advice : BUY! Why? dun forget you gain extra 5ft land against yr neighbour which has land size of 22 feet only, 5ft  23% more! Total extra land area (375sf) is worth at least 40K now! You are indeed a "superlink" owner instead of ordinary "link house" owner. 2-stry house with build up close to SD bu which is very limited in the mkt now.
p/s : I did this method of calculation by myself, if you dun agree just leave it.  my 2 cent. Good Luck!