Case fan prices are very fluctuating all the times.
On june 2008 i bought a amigo 4 colored led fan fo Rs. 325 !!!!!!!!
On OCT I got quote CM 120mm led fan Rs. 425 & non led Rs. 300 ( only )
Now it's Rs. 475 & Rs. 375.
When new stock will come prices may fall down ( though not sure )
Wait untill March or If you have the skills
bargain