CLEAR: $100 Rebate
I personally don’t think CLEAR is worth it. With TSA pre-check, the lines are already pretty much non-existent. That said, if your credit card offers to pay for a CLEAR subscription, and you already have TSA pre-check, then go for it.
That said, there are frequent promotions for signing up with CLEAR. The most frequent promotions are the $75 Uber vouchers. The other one I have seen is the $100 CHOICE Rebate of any travel expenses you may have. This obviously is the better choice, if the promotion is around (it’s usually just a promo code and not a targeted link).
I was fortunate to get the CHOICE Rebate and used it to expense my rental car. The process was pretty simple; I just took a screenshot of my receipt with all the necessary information displayed, and just uploaded it on to their dated website. I was skeptical at first, thinking that I would never get the rebate, but after a month, I received the rebate and transferred it to my bank account.