Their pricing is only slightly cheaper than backblaze b2. For storage they charge $4/TB/month whereas b2 charges $5/TB/month, and for egress they charge $7/TB whereas b2 charges $10/TB. Personally I don't think the risks (eg. your cost going up because crypto price skyrocket, or you losing your data because of a crypto winter) are worth the savings. Not to mention there are much cheaper solutions than the two I mentioned, like deep glacier that only charges $1/TB for storage, or office365 that provides 6x1TB storage for $100/year.