D-Link replied me after a week and a follow-up email from me. The normal repair price is US$61 (S$86) and after the repair is done, I will get an additional 3 months warranty.
However, out of good will, they are willing to give me 30% discount off the repair charges which is now US$42 (S$59) and an additional 3 months warranty, so that makes it 6 months warranty in total. They accept cash only and for some reason they do not quote in S$. Weird.