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- A Russian oligarch's seized megayacht is costing US taxpayers $922,000 a month, a court filing says.
- Officials said last month it costs $600,000 — but there's also insurance and dry-docking fees.
- Another Russian billionaire is claiming ownership of the yacht and opposing attempts to sell it.
A Russian oligarch's megayacht is costing taxpayers almost $1 million a month after the government seized it, court filings say.