Refund can be initiated within 14 days.
The programs you mentioned are able to recognize many captchas, but they are mostly simple.
CapMonster supports not so many captchas, but allows to recognize most complicated captchas, which cannot be processed by other programs.
Such captchas are usually used by most popular resources.
Under recognition I mean ready-to-use modules in CapMonster.
CapMonster can be trained to recognize some captchas by user himself. Even novice will be able to create own module for any existing captcha type, including those which can be recognized by other programs.
As for Senuke and GSA, you can send captchas from Senuke and GSA, which were not recognized by other programs, to CapMonster and thus increase efficency.
However, we should note that Senuke and GSA do not fit well for working with CapMonster.
For example, CapMonster allows to recognize audio recaptcha2 with almost 100% success.
But, as far as I know, Senuke and GSA do not even support this.
Although, audiorecaptcha is used on half of the sites, which Senuke and GSA work on.
I.e. just this one captcha would allow to break more sources then all captchas from other prograns (CS and CB) at all.
These are good, trusted, not spammed sources which valued much more higher. I think you know it
