No idea about the cost as it changes everyday. Go for Landi Ranzo with 55 ltr big kit(094) with a good 55 ltr cylinder like INFLUX, Mavrick, Faber or Dalmine. Ask the fitter for neat fitting even if he takes a whole day. Go for original Italian kit and parts. I think Al-Razak in Islamabd id good but don't know his address.