Wooden Sheds

Home Depot "Wood SpaceSaver Shed " 4x12  8' high. Has a lean-to style roof.
$1,800 delivered. Self assembly.

Above seems to be the same as the "Garden Hutch" from www.shedsusa.com
available at Home Depot in the east. $1,800 delivered and installed.

Others at Home Depot

Costco YardLine Bridgeport 8x10  6' high walls $900 (sale) delivered. Self assembly.
  Smartside siding
  
Plastic Sheds

Lifetime 6433 11' x 11' Shed Constructed of  UV-protected, high density
polyethylene (HDPE) plastic with powder-coated steel reinforcements.
$2,110, ($1,830 at Amazon)

Advantages and Disadvantaages off A Plastic Outdoor Storage Shed

Do It Yourself: 
How To Build A Shed, foundation to roof, all FREE information for you, you shedbuilder you!
How to build a shed, free shed plans, build it yourself! at MyBackyardPlans.com