The cost of Dandi/ Palki, Kandi & Mule/ Ponies are regualtd by the administration and one can get them booked at fixed price from booking counter at Gaurikund/ Sonprayag.
For different distances, there are different rates. Such as for Gaurikund to Kedarnath, Dandi will cost INR 4550/-, Kandi will cost INR 3350/- and Pony will cost INR 4100/-. Check complete Dandi, Kandi & Mules rates at Kedarnath.