From ArborWiki

Things that can be delivered to your Ann Arbor home free:

[edit] Food

• Dairy products from Calder Dairy. This is also available for other areas within Washtenaw County. Actually delivery is $1.50. That might be close enough to free to still count?

[edit] Caffeine

• Artisan coffee from Mighty Good Coffee
• Superb coffees from Roos Roast (free delivery in 48103)
• Fair trade and organic tea and tea accessories from ArborTeas

[edit] Spirits

• Wine from Village Corner