I logged into Zoom and had the following banner:
"HUGE SINGLES' DAY SAVINGS Save 50% off your next 6 months of Zoom One Pro, plus enjoy 1 Year of unlimited Whiteboard access for Free when you upgrade by November 14th! Terms apply."
I was able to apply the discount and get one month's access for $10.49 (usually $20.99) and Zoom Whiteboard for $0 (usually $3.46 per month). There's also a tax which adds $1.05.
It says the discount expires for me on May 7, 2023 (6 months from the day I've subscribed) and that Zoom Whiteboard auto renews.
Terms and Conditions
The discounted price provided for by this coupon will only remain in effect until May 7, 2023, after which point your subscription price will revert to the undiscounted price and you will automatically be charged that amount thereafter. This cannot be combined, exchanged, or used in conjunction with any other offer.
Edit: added price to title
Logged in to my account currently on a monthly Pro plan and was offered a 35% discount to switch to annual billing