The Ninja Kitchen System 1100 can be purchased online at Amazon as of 2015. The model is also available online and in some stores from Kohl's and at select Sam's Club locations.
Individual parts and accessories of the Ninja Kitchen System 1100 are available online from the Ninja Kitchen website. Parts available for individual purchase include the 72-ounce locking pitcher lid, 72-ounce pitcher, 40-ounce locking bowl handle, 40-ounce bowl and dough station. Replacement attachments are available for the six-blade attachment, whip attachment, dough blade, dough paddle, motor base and four-blade attachment. The "Ninja Breakthrough Blending! Recipe Book" can also be purchased from the Ninja website.