thanks to everyone who provided tips. unfortunately I didn't win. it was my first auction experience. sharing of my experience for others benefits.

1. went to auction office physically, but all biddings were done online using phone/laptop (reason for being physically there as per my auction agent was that just in case our electronic device stops working during bidding, at least we can inform the auctioneer). 6 bidders registered for the unit I'm interested in but only one other bidder was there physically, others just bid online from somewhere else.

2. this was the 3rd round auction for the unit (previous rounds were conducted at different auction house), and because everyone was sleeping (including me) during previous rounds..the final price ended higher than reserve price of 1st auction round  which is still about 10% below market price, but not sure worth it or not since it's bumi unit & auction unit.

3. ALWAYS STICK TO YOUR BUDGET LIMIT - I shamely didn't follow this rule. the price jumped so fast, and I really wanted to buy the unit for own stay. I bidded until the second last bid before the winner won. if I had won then need to eat maggi everyday 

anyway good experience. maybe better luck next time.

if only there's an automatic service that could notify me whenever a unit that I'm interested in comes up for auction..e.g. insert keyword "klcc", then whenever a unit that has address klcc comes up for auction, an email/SMS/whatsapp/etc. will automatically be sent to me.