Aside from the initial fees and set up costs, are not huge.
You will be given stock and stands to get you started and - assuming you choose outlets where the cards sell - money will start to come in after the first month.
All franchisees agreed that petrol was the by far the biggest overhead. The business can be run from your existing car - providing it has reasonable boot space. Ken Glanville of Colneis admittedly covers all of Devon and Cornwall but estimates that he does 35,000 miles a year - which obviously adds up in terms of petrol costs.
Although once the business is up and running you should find that your success brings your petrol costs are brought into proportion.
All the franchises can be run from a home office with franchisees either storing stock in a large spare bedroom or - as this isn't a perishable product - in the garage. Although ordering on a bimonthly or even monthly basis means the stock shifts fast and you shouldn't need to store vast quantities. So you won't have to pay out for office space and so long as you have a reasonably sized house you shouldn't be overrun with boxes.
The driving force behind this business is cold calling - and subsequently building up relationships with your retailers through regular visits. Advertising costs do not tend to figure. It's only really through word of mouth that clients will contact you.
Costs ultimately come down to sundries like your accountancy bill, bank charges for paying in cash and a mobile phone. Once your initial fees are paid, overheads are low - which can only aid your profit margin.