Have you ever heard of the $100 hamburger.....that's your niche.   

When you pull up to a hamburger shop, you want your burger.

I'm out in Hamburg.

From what I have seen, Brighton and Hamburg seem like potential fits. 

Thank you for sharing @William Hamburg!

McDonalds built a huge company but Ray Kroc always said he was in the land business and not the hamburger business.  

Boy I looked at Abeerdeen hard back in 05 06 is was dead and dying.. not sure whats happened since.. but I loved flying into that little airport there and having my 100 dollar hamburger but then the restaurant closed.. the approach was over the bay very cool  then I would take the long way home and fly up the coast to the Straight and wrap around to the peninsula go over Crescent lake   then shoot down West of the SeaTac Class B and back home.. fun way to burn avgas. scenery off the charts.. 

I was at a Chinese bakery, someone bought one pork bun, was charged 86 cents, went ballistic when the owner said it's 80 cents for the bun, and 6 cents for sales tax.

What is the appropriate price for a hamburger?

If there is enough customer traffic in front of the hamburger place to support the hamburger business, there is likewise going to be enough customer traffic in front of the Long John Silvers that doesn't like hamburgers but would prefer fried fish/chicken or any other unhealthy food choices.