It is a bit hard to evaluate the potential when you need to top up and do a captcha just for evaluation purposes. The barrier of entry is quite high.
The reason for the higher barrier of entry is bots/abuse. Up until a few weeks ago we didn't even have the captcha option. Without any kind of identification, it's impossible to prevent automated/bot signups, and they can abuse the system to oblivion.
I understand that's not ideal, though I hope it still makes sense!
> Unfortunately, due to the fact it's too costly to properly avoid bots and other automated tools from abusing our service, we don't offer a free trial.