In terms of advantages, Walrus provides a high level of data availability and resilience, meaning even if a large portion of the storage nodes fail, data can still be recovered without a hitch. This makes it a compelling choice for applications needing high availability and robustness. Regarding trial tokens, you can acquire testnet WAL to experiment with the Walrus platform. Tokens are available specifically for use with the testnet environment, ensuring you get a chance to explore the platform's capabilities without financial commitment.

Walrus offers a decentralized storage solution that emphasizes low-cost storage for large binary files, such as blockchain data and media files. One of its notable features is the use of erasure coding, which allows for a minimal replication factor, making it cost-efficient compared to traditional methods. This is particularly advantageous when compared to platforms like Sia and Filecoin, which also offer decentralized storage but may not have the same low-cost scaling benefits.