You know while I am reading this I do understand where your coming from with wanting to test them first I really do, It would be great if they had a 7 day licience to test but I also see it from UNA side the apps pays for the future investment and of course incurred costs that have to be paid, I also pay for Apps from AQB software too as @AQB soft are amazing with knowledge and support too, So I do see both sides and would never want to put UNA under any financial strain after all if they every stopped there time knowledge which is for all of us we would all be in trouble at some point. Just to finish off I know everyone has a different budget when it comes to purchasing them too.