The price is per-candidate to discourage companies from sending out more challenges than they have time to thoughtfully review. The expected use case is that you interview the candidate, then if you are both still interested you issue a takehome challenge, then you have another interview to discuss the challenge submission.
If you're issuing more than 5 challenges per role you fill something somewhere has probably gone awry. $100 per role hired is no more than a rounding error.
Also, the timer starts from the first `git clone` rather than the first push.
IMHO trying to educate companies about their process is a sure way to failure.
Also doing interviews before technical challenge is a sure suicide for companies. In my experience to minimise the waste of time you send out quick and easy technical challenge (no more than 30 minutes!) and you filter out 90% of applicants.
With remaining 10% you have a phone call and if you have more than X (magic number of 3 in my experience) of qualified applicants you send out more thorough tech challenge (no more than 2h long!).
Rinse and repeat until you get to X applicants which you will invite for face to face interview.
Truth is that almost no-one in tech is qualified to do face-to-face interviews. Either they are not on the level technically or dont have the communication and HR skills. Interview in person is mostly to see if you are not dealing with a weirdo and if that person will be a good fit for the team.
A side note, I tend to issue valuable response to every candidate. If you do that, they are very likely to re-apply, step up when someone drops out or recommend to friends. People tend to do/say the same dumm stuff so you can prepare those replies as well.
Your pricing seems rather paternalistic. Let people use your service how they want to!
Are sample questions provided? Offer good quality questions and a monthly rate for a certain number of candidates. In some organisations it's easier to approve a monthly expense than a per use expense.
You should probably check the user can git push before starting the timer.
I recently started a new job. Before I spoke to anyone, I was issued a Hackerrank test to complete. I'm not saying I like it, but the coding challenge is often near the beginning of the hiring funnel to weed people out before the investment of interviewing.
If you're issuing more than 5 challenges per role you fill something somewhere has probably gone awry. $100 per role hired is no more than a rounding error.
Also, the timer starts from the first `git clone` rather than the first push.