Obviously people don't understand how businesses are sold. I'm a veteran of that rodeo many times over, including the purchase and sale of a restaurant/bar in Largo FL that several DR1ers have gone to in a former life.
I got ~zero~ impression the ONGOING BUSINESS is for sale. The ASSETS are for sale. A purchaser can make a sushi bar or wing and burger joint utilizing the ASSETS.
The OP makes no mention of cash flows, payrolls, food costs or any other Income Statement item. He mentions no Goodwill, a Balance Sheet item.
So those 'MBA's in Economics" who are laughing once again clearly demonstrate they have no clue of business when offering their opinion.
Ten large ain't SQUAT when opening even a skim ice cart. And $400 rent is VERY low for a corner location in a decent size town.
It could be a decent retirement hobby for someone with a small clue, a meager stash and a couple of brass ones...