I did a quick search and found that the pricing seems to be good even when compared to US. Just ensure the capacity of each HDD slot. I think it is a max 2TB enclosure. Not sure though.
Dranil/Others,
If you don't really need RAID, you may want to consider a Mediasonic 4 Bay JBOD (Just a Bunch of Disks).
I don't need RAID, so have just ordered one on link below (Currently not in stock, but should be available soon as per Amazon's email to me):
Amazon.com: Mediasonic 3.5-Inch USB 3.0 and eSATA Pro Box 4-Bay Enclosure HF2-SU3S2 (Black): Electronics
There are other models too. The one that I have chosen has USB 3.0 along with eSata. There are other options with just eSata and USB 2.0 for $99. If you want to use eSata 9you will require a port multiplier).