After when we have discussed, the solution, what they could provide us is not enough for us, they promised, they will refund the cost of the license... 1 year ago... I have no answer for my e-mails... 1 year ago. I won't recommend them; or for first, they have to do the implementation and they have to prove the solution is the right one for you, then you can pay it. But they won't accept this condition I guess.
So try another solution - this is my recommendation. Review collected by and hosted on G2.com.