I think you underestimate the costs of doing that. Not just the financial costs, but the social ones. Changing idendity requires forfeiting most of your property that you can't carry with you, all your academic and professional certifications and achievements, and your entire social network.

You don't have any basis for that conclusion. The social costs are obvious and the financial costs I happen to have researched.

It's unclear to me that this would be better than spending 25 years in prison.

I neither believe nor disbelieve your claim about yourself. People do stranger things than voluntarily obliterate most of their life (suicide doesn't even offer parole). Nevertheless the reasoning "V_V would prefer imprisonment for most of the rest of his life over moving to a country without an extradition treaty therefore Wedrifid must underestimate the costs of such a move" is rather flawed.