The best you can do is the Logitech MK345 bundle:
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If you are on a very tight budget, the Logitech MK270 is the best under Rs. 2000:
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Both aren't gaming keyboards by any definition though. You'd be looking at spending Rs. 950 more for slightly more gaming oriented wired keyboard + mouse (Gaming keyboards and mice are generally not wireless). The CM Storm Devastator is good if you are OK with this:
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For a true mechanical gaming keyboard however, expect to pay around Rs. 10,000 for the keyboard and mouse.