The one you listed is not sold directly by Amazon (but a merchant on amazon site, he does only the shipping and the customs/duties will be collected by the courier guy not sure upon landing in India which you need to pay), hence the import fees deposit is not collected up front which happens if it is sold by amazon. That should be the difference of the amount of around 5k in yours and push's links which would be the customs/duties. It can be a costly affair if not directly sold by amazon as the customs/duties charges are dependent on the mood of the customs guy.
Hope this helps.