2019 Timeslips License purchase from third party vendor?

SUGGESTED

Have a client who upgraded to 2019 a few months ago roughly 1 week before 2020 was available; they have 18 licenses.

Now that the August 1, 2019 deadline has passed to buy a license from the direct sales channel, they find they need 1 more license. They are told they need to upgrade for that license. Since they just upgraded and they are still unhappy that they were sold the 2019, at great expense, without being told that a new version was a week away, they are beyond not happy.

I understand that there are channel and third part sales available. Has anyone used a particular vendor, the prices seem to fluctuate significantly. Please let me know. BTW Timeslips people who make decisions, seems that a tiered upgrade based on year purchased would be more fair. Forcing a company to upgrade 6 months after upgrading is infuriating...Just saying....