I'm selling my Clipper Card, as I no longer need it. It has a balance of $180, and I'm offering it for $144, which is %20 discount off the card's value.

It's completely legitimate. We can verify the balance together at a Caltrain station using a ticket machine, or if you prefer, I can provide you with the card number, and you can contact Clipper Customer Service at 877-878-8883 to confirm the balance.