Can Celestia's modular Data Availability (DA) scheme reduce rollup costs to $0.01 per transaction? Celestia’s innovative approach separates consensus, execution, and DA, leveraging Data Availability Sampling (DAS) to scale efficiently. By offloading DA to Celestia, rollups avoid Ethereum’s high calldata costs. SuperBlobs, a collaboration with Conduit, achieve a 96% cost reduction, settling 1 MB of data for $0.81 compared to $20.56 on Ethereum. At ~200 bytes per transaction, this translates to roughly $0.00016/TX, far below the $0.01 target. However, total costs depend on rollup execution and settlement fees. While Celestia’s DA layer drastically cuts costs, achieving $0.01/TX requires optimizing all layers. With ongoing upgrades, Celestia is poised to revolutionize rollup economics.