Five of our domes are priced differently than the others, this simply reflects extra amenities in these five domes. For example, The Anchor, Mossy Log, Arizona and Treehouse domes offer a luxurious sauna on their decks. Our Fun dome boasts an extra double bed and a huge indoor spiral slide. The Mossy Log also has a built-in projector and motorized screen (no add-on needed for this particular dome). Please refer to our chart comparing amenities in all seven domes for an additional reference.