He said that he pays every year money on something that didn't work and the support took ages. that was his problem....
Now I assuming that if he had a opensource logbook he could quickly find out what the problem was himself without relying one someone else.
Maybe the right counter argument would be that 100$ is not sufficient to provide a SLA to handle his support request whithin a shorter timespan. It should be prices higher ;) If this app is so critical for him I assume again the OP wouldn't mind paying it.
Now I assuming that if he had a opensource logbook he could quickly find out what the problem was himself without relying one someone else.
Maybe the right counter argument would be that 100$ is not sufficient to provide a SLA to handle his support request whithin a shorter timespan. It should be prices higher ;) If this app is so critical for him I assume again the OP wouldn't mind paying it.