I’m pretty sure I can’t be the only person to have found this deal, but I searched for it & couldn’t find any mention so here we are.
Malwarebytes is offering 4-year Premium licenses for $5 a device. This offer is for students only & you have to verify with StudentBeans to get the coupon code to apply at checkout.
Verifying through StudentBeans just takes a valid .edu email address. I can confirm it works, I got 2 licenses for $10 and change.
https://www.malwarebyte