my 2016 Summer Sale Summary as of now.

Steam Summer Sale
Data Hacker: Initiation
Data Hacker: Corruption
Data Hacker: Reboot
Elements: Soul of Fire
Atonement: Scourge of Time
City of Chains
Invasion: Brain Craving
Elements II: Hearts of Light
Outrage
Insincere
Purgatory
Life Is Strange Complete Season (Episodes 1-5) (Asia)
Batman: Arkham Knight Premium Edition
Learn Japanese To Survive - Hiragana Battle
Tropico 5 Complete Collection
Bloodgate
Surgeon Simulator Anniversary Edition

Total Damage RM113.92 - RM50 free steam wallet from 11street = RM63.92
Total Full Price RM427
Total Save RM363.08

IG Summer Sale
Alien: Isolation Collection Retail (RoW)
Lords of the Fallen Game of the Year Edition
Mountain
BloodRayne 2
SanctuaryRPG: Black Edition
FootLOL: Epic Fail League
Dying Light Enhanced Edition ROW

Total Damage USD0.43 @ RM1.77
Total Full Price RM417
Total Save RM415.23

So total figure for this 2016 summer sale would be
Grand Total Damage RM65.69
Grand Total Full Price RM844
Grand Total Save RM778.31

from the new user event... (THE EVENT ENDED ALREADY)
got 30% discount coupon and bot rm100 steam code then sell it...
later i got another 50% discount using dupe account...
the profit from selling rm100 code use it to buy rm50 steam code and apply the 50% discount.

some lucky bugger here even got 90% discount coupon.