Many online hobby shops gives the option of brushless motors and ESC. My budget is low so I want 3 Brushed motors to run 3 blade propellors of 6" dia. Does anyone have that or some website where it is available?

brushed motors are happy only upto 4 inches dia two blade.

but if you want use three blade 6 inches dia then you may have to look at gear driven brushed motors. cost wise gear driven brushed will turn out to be almost same or may be more with ESC in comparison to the combo pack of DYS brushless at can 22 size at 1000KV/1400KV.

Brushed motors will only give you trouble and you will end up spending more than a brushless setup.

From where can I get DYS brushless at can 22 size at 1000KV/1400KV

have you checked the Mega list of all RC outlets in India http://www.rcindia.org/rc-outlets-and-resellers/mega-list-of-all-rc-outlets-in-india/

But I think Li-Po battery is used with brushless motor, which increases the cost along with its charger.

PM sent.