Boat updates pricing docs with competitor comparisons

As long-running coding agents proliferate, the sandbox layer is rapidly becoming a race to the bottom on raw compute economics rather than platform lock-in.

• –**Direct Margin Attack**: Offering 4 vCPU / 8 GB environments at $0.036/hour directly undercuts major players like E2B ($0.331/hour) and Modal ($0.476/hour) by roughly 9x to 13x, challenging the hefty markups historically captured by managed container platforms.
• –**Pushback on Active CPU Gimmicks**: The documentation articulates a common developer pain point with "active CPU" billing: because memory is billed continuously and build/test loops heavily saturate CPU anyway, variable billing often obscures true costs rather than saving money.
• –**Full Credit Pass-Through**: Monthly tier commitments (from $20 to $2,000/month) convert 100% of plan fees directly into VM seconds alongside concurrency caps, reducing the financial penalty of SaaS platform minimums.
• –**Verification via Benchmarking**: Backing pricing claims with public execution benchmarks (reporting 27.7 runs/second on Node.js build loops versus Daytona's 18.6 and E2B's 11.2) attempts to preempt concerns that budget virtual machines compromise on throughput.