I just realized that I can get 10% discount for my transaction with KG Value Card, just by showing the card into the cashier (for books published by Kompas or Gramedia only). In this last four month, I never do that because I thought that the discount is only given if I use the e-wallet feature 
. The cashier also never remind me each time I do a transaction, until recently.
Well, better to read the term and condition well the next time I apply for any membership.
