According to their website, this is true.
Two days ago the early termination fee information was available at:http://www.clear.com/legal/etf
however this page is now blank.
if you click on "early termination/restocking fees" a pop up is displayed with the following:
Service Agreement; Early Termination/Restocking Fees
On most plans, a 2-year service agreement is required and either (a) an Early Termination Fee of up to $185/device applies for purchased equipment or (b) a restocking fee of $40/device applies for leased equipment (see your Order Confirmation and /www.clear.com/legal/etf for details); on all other plans, an activation fee of $35/device (with a bundled plan constituting a single device) applies.