You can find the Earthstone 90 here. The price will vary depending on whether you want the wood-fired oven or the gas-fired oven. For your reference, all of Earthstone's Ovens can be found here also.
Earthstone 90: https://www.patioandpizza.com/collections/earthstone-ovens/products/earthstone-ovens-model-90-due-pagw?variant=12380948463721
