Also, even if the system could be designed for $10,000, the yearly cost of operating it (hardware costs and personnel) would be significant, since all the data from the various courts would need to be entered daily, and someone would need to verify that the data in the system was complete and accurate. Plus, the system would need to be backed up and have redundancy and disaster recovery plans. You can't afford to shut down the legal system across the entire country because one data center loses power. We're not talking about Twitter here; we're talking about critical national infrastructure.
And who said anything about the yearly cost of operating it?
> I'm a senior developer and I cost about that, at freelance rates.
For a month? Do you live in a place with really low cost of living?
For a senior freelancer, different standards would apply, I'd hope.
But in general: More money is better than less money. Especially for essentially the same amount of work.