cost of baths
1 For a mud experience at a fraction of the cost, the Indian Springs resort in Idaho Springs, Colo., sells kelp-infused mud for $10 that customers can place directly on their bodies as they sit in geothermal baths. 2  Cost is $18-$23 per person. Discounts: 2  For a mud experience at a fraction of the cost, the Indian Springs resort in Idaho Springs, Colo., sells kelp-infused mud for $10 that customers can place directly on their bodies as they sit in geothermal baths.