I'm sorry, but I really don't see this being valuable.
there's a hyphen.
Singular word that should be plural. (Does Tallahassee own a single computer?)
Even if it was " Tallahasseecomputer(s).com It would still be a small niche that I wouldn't waste my time on.
30 of the top 75 cities in this format are available to hand register - including cities like Houston, Las Vegas, San Francisco, Jacksonville, San Jose, Omaha, Cincinnati, Indianapolis, Louisville, etc.