Though manufacturers are selling the Covishield and Covaxin vaccines to private hospitals at 600 and 1,200 per shot, respectively, some centres have been charging as high as 1,800 for one shot of Covishield and 1,500 for one shot of Covaxin. But, now PM Narendra Modi has announced that private hospitals in the country can add a maximum of Rs 150 service charge to the Covid-19 vaccine price.