Concrete examples (illustrative; plug in today’s gas + pric…

Concrete examples (illustrative; plug in today’s gas + price):
- Ethereum L1 at 20 gwei, ETH = $3,000
- Consume nonce (50k gas): 0.001 ETH ≈ $3.00
- Audit hash event (15k gas): 0.0003 ETH ≈ $0.90
- Add session key (100k gas): 0.002 ETH ≈ $6.00
- Revoke key (60k gas): 0.0012 ETH ≈ $3.60
- Modern L2s (Base/OP/Arbitrum/zk rollups): the same calls typically land in the ~$0.002–$0.05 range depending on calldata size and time of day. Polygon PoS is often <$0.01.