This one is actually an extinct product, we will not continue to develop this design. We found the Aerostruder Tool Heads work very will with both standard and flexible material, so we chose to move forward with those!
We have discontinued the flexystruder because the newly announced Aerostruders will be available soon. While we do not have a final release date at this time, interested users can sign up for updates here: https://www.lulzbot.com/content/newsletter-signup
We will be sure to send out an email announcement when they are available for sale!