I really like Minio, but it's very expensive. The cheapest license costs $96,000 annually. For a small business that needs 5 TB of storage, the cost is $851,520 annually, which is out of budget. I think they should consider scaling their prices more affordably, and that way they'll reach a broader customer base.
The price you quote seems to be for 5 PiB of storage, not 5 TB. The $96,000 covers the first 400 TiB, and after that it seems to be, or at least start at, $20 / TiB per month. If I understand it correctly that means it costs roughly the same as the major cloud providers, except you also have to supply your own hardware. Very much not aimed at small business.
Is that second number just the software license price? That's orders of magnitude more than paying a cloud provider to store 5TB for a year on their hardware (and even more expensive than storing on s3 with 5PB of egress.