You can google a bit about Bentley Connect charges, we were not the only ones who called their sales reps in a panic.

https://community.spiceworks.com/topic/2129583-gathering-inf...

If you can get a good deal with them it's probably fine, and we only talked to nice people there. But we're still on limited runway, we can't deal with random $20k invoices, even if a nice sales rep reverts the charge when called.