They currently limit to 50gb/d AND if you cross 500GB for that month, that daily cap goes down to 10gb/d for rest of the month. So, effectively, max monthly is 500 (50gbx10d) +200 (10gbx20d) = 700gb/mo

Annualized is 8.4TiB/yr @ $168+taxes/yr which makes for a good deal…
BUT it also has a 10Gb filesize limit and no rclone support. So I gander it’s enough pain to use that it isn’t worth it for hoarding.

Source:

Your total storage amount depends on your plan. For all plans, individual users can only upload up to 50 GB each day, using the Verizon Cloud desktop app after the initial backup completes.
If you:
Reach the 50 GB limit, you can’t upload additional files on that day using the Verizon Cloud desktop app.
Exceed 500 GB in a month, your 50 GB daily limit will be reduced to 10 GB each day for the rest of the month.
The maximum individual file size you can upload through the Verizon Cloud desktop or mobile app is 10 GB. Most content won’t be larger than 10 GB, but Blu-ray™ and 4K formatted videos may exceed this file size limit and won’t be supported.

https://www.verizon.com/support/verizon-cloud-faqs/