I'm not so sure about that. A pair of engine overhauls will be $500k. It already has excellent avionics, and a paint job isn't that much (honestly, they should have painted it before trying to sell it, or included a paint job with the sale). At $600k plus overhauls, you are where Bruce is with his 980-- and this one probably has lower total time.
But $800k is probably too much, that I would agree with.