well after u purchase a .net (comes at around 300-400 rs/yr --depends on host) u can add redirection to ur website at just around rs. 50/yr.
well ur host can provide exact rates to u. and this will simply do ur job in min. cost but once u r set to take a .net u r recommended to use a paid webspace which comes for as low as rs 250/yr and advantages u get is to know more close abt scripts and high level web hosting as compared to free sites

happy work.