Two units on sale for Rs.650 each (plus shipping).
I've used one of these fans for a couple months but one is still unused. The fan description is from Sidewinder, where I got these fans - $15 a piece. Keep in mind these fans are a little loud, my reason for selling them in the first place. You can always under-volt them or hook them up to a fan controller to lower the speed/noise.
If you buy both fans I'll throw in a 7v custom adapter for free - not sure if I've got 2 and I don't have time to make another.
This is the final price, so don't bother replying or PMing me if you plan to lowball - you are more than welcome to order directly from Sidewinder and pay more.