In reply to Joyce:
Ask yourself why they are franchising it, rather than doing it themselves and employing people. Either they think the risk is too great or they don't have the expertise.
Look at how much established franchises change hands for. Not much.
Your graft, and it will be, builds their brand not yours.
Really good retail brands, Macdonald's or cafe Nero are not franchises in the UK.
Non franchised operations can always undercut you, they don't have a service charge.
If it is a mobile type of franchise make sure your "area" is small, they can't stop you trading out of area and if you want to set up on your own you can do so not very far away.
Think what else you could do with that money, in terms of training and qualifications that can get you into protected professions, teaching, plumbing, engineer whatever with nice lifestyles.
Don't franchise.