If you are just connecting 2 computers (and don't need to share resources) you don't need a router. Just a hub which would cost you about Rs. 600 or so I guess.
Otherwise I believe you get a router for as low as Rs.1400 or so.
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"The true measure of a man is how he treats someone who can do him absolutely no good."
btw which net r u going to use, i mean isp? some isp like mtnl requires router to connect to them. if so, u can make a lan through that router only and connect two PCs, one through usb and other through the lan socket.
what is the aprrox. cost of router connecting 2 desktop computers ?
If you only need lan between two PC and both PC have Ethernet ports which is common these days. then you only need a cross cable which is available @ Rs 10 per meter.