2000 100 series landcruiser

I recently found a great deal on a 2000 Toyota Land Cruiser 100 Series. The owner claims it has 99,000 miles, but he is unsure, as he is the third owner of the vehicle. The timing belt was replaced by a local Toyota dealership, and the vehicle is in very clean condition, with no lift and stock tires. However, I am concerned because the owner is uncertain about the accuracy of the mileage. I tried searching online and through forums for similar issues, but I couldn’t find any relevant information. As a first-time 100 Series Land Cruiser buyer, I’m seeking advice from experts in the community to help me make an informed decision. Also, can the mileage be tampered with?

Thanks to all in advance,

 

[BullElk]

IMO, the actual known or unknown miles isn't as big a deal as the fact that the owner doesn't know and says its "because of age" Huh?? . What else is he trying to potentially hide or "not know"?

 

[excessive]

Spend the $ and get a Carfax on it, you'll get an idea of the actual mileage.