We spent some 10 FTE on integrating Hiptest in our CI and it's $8 per month per user (x25). Let's say it is nothing compared to some other licenses.

It depends on your organization size, but its pricing is not too high. For 25 users it's $8/month for each user. For three users it's free.

First three users are free. It should be enough to get the feel of it before committing to it. Plus per user price is USD$ 8-11 and you can have volume discounts.

Not applicable.

Make the basic license larger (it has 3 accounts; it's better to have 5).