The new MakerBot Smart Extruder+ certainly has a credibility behind it already when you consider the hours and quality assurance systems that went into testing it. Offered at $199, or $99 when purchased with a MakerBot Replicator 5th Generation 3D Printer, the extruder is sold separately. This new model offers numerous refinements to please users, from reducing clogging issues to allowing for better connectivity. Those who purchase the Smart Extruder+ can look forward to greater reliability, better print success, and a product that lasts longer too. Read more at 3DPrint.com: http://3dprint.com/125961/smart-extruder-plus-tested/