I remember hearing stories about how Quiznos were basically a nightmare to own. Sounds like they charge each franchisee a ridiculous amount for their ingredients and they are basically forcing their own stores out of business due to high costs. There's been one close up already around here in the last few years.
edit:
this is some great reading in the comments:
http://franchisepundit.com/index.php...nchisee-makes/