Having watched clear in action, I’m not even sure it’s worth it. I have pre check and I watch the clear line from my line. Clear works based on these kiosks that scan your face. You need to be waved in to a kiosk and everyone seems to need help from one of the onsite technicians anyway, so it’s not like those kiosks are in full use all the time or all that efficient. Also, a clear employee has to escort you to the TSA desk to be waved through. Clear users still need to go through the TSA screening, so they join the pre-check line where you don’t have to take off your shoes.
Waiting for a kiosk, waiting for clear staff assistance; these things become a bottle neck and frankly the line doesn’t move much faster, if at all, than pre-check. Pre check costs less than $20/year. Clear costs nearly $200/year. You might save 5 minutes or you might actually take longer to get through. I just don’t see the value.
Oh yeah, and there is also the fact that you’ve given your biometric information to a private company. I’m sure they won’t be tempted to exploit or sell that information to make more revenue when they’ve exhausted their airport line based growth. /s