Last Minute

I’m trying to find some wristbands for tomorrow (10/5) but 2nd hand sites are ridiculous!! I’ve seen some folks say usually people outside of the park have them for reasonably cheap. Question is: how do I know if they are legit? Is there someone who is out there every year that you all trust? What’s the best way to go about getting very last minute wristbands? TIA!!

Edited for clarity :)