Ask HN: Any Cyber Monday deals offered by YC-backed startups?

Since it's Cyber Monday, let's do a roundup of what YC-backed startups are offering today. Any good deals around?

Not YC backed, but we (https://angel.co/scalable-informatics) are offering our NVMe appliance at $1/GB usable. See https://scalableinformatics.com/forte for more info.