Budgeting $15 for the payroll for every hour your charming cafe is open (let's say 10 hours a day) relieves you of $4,500 a month. That gives you another $4,500 a month for rent and $6,300 to stock up on product. It also means that to come up with the total needed $18K of revenue per month, you will need to sell that product at an average of a 300 percent markup.

The Big Green Bookshop now has its own blog where you can follow its progress. And, OK, maybe I can be a tad impatient when it comes to some bookshops, but I wish Simon Key and Tim West all the luck I can muster. As Simon says himself: "We want to give the residents of Wood Green a shop that they're proud of, a place where there's always something happening, be it an author event, a reading group, a coffee morning, an evening of music or poetry, or just a place where they can be inspired by something they find on the shelves.