Recently, i found a pretty useful website that i will like to
share. Its a book price comparison website whereby we can find the
different prices of the same title from different online bookstores
to compare. Its easy to use and very useful as we do not need to
search through the web and find the price one by one as all the
prices of the bookstore are now stated at just one webpage.
Website: http://oo.sg
What are websites do you all have to recommend? 
Excellent website I must say! Thank you!
But my favourite website at the moment is fishpond.com.sg which
almost always is priced cheaper than bookdepository. So I always
compare both sites as sometimes fishpond does not have the book I
want but bookdepository has it. The service rendered from both are
IMO impeccable though, so far no problem at all.