I agree with daalter that there hasn't been a definitive answer in several years.
If it's D1, it could take more than $40k, or it could take less than $10k. Depending on what priority the recruit is for the sim. And this amount certainly changes based on prestige.
I also believe sims continue to spend all their recruiting resources in the first cycle. The secondary wave of sim recruits occurs when the recruits lower their requirements to consider a team, not the sims doing another round of spending. Those guys generally can be bumped off for a couple grand.