If i need a redesign of site based on "Responsive Web Design" what would the charges be?

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This would depend on the complexity of design so cannot be quoted offhand. We would need full details of design requirements so that we could study the same and then offer a quote. You can contact us through our Request A Quote form and we shall get back with a quote for the job to be done. Do not forget to provide as much details as possible so that nothing is skipped because if there are changes once p[roject starts then this could call for a revision in costs.