All that said really good recruiters are well paid.
Does this also work for in-house recruiters?
Quite fascinating area really.
In-house recruiters are not usually paid fees like agency recruiters - they might get bonuses, but most in-house are paid mostly in salary with smaller performance bonus. Agency recruiters are usually paid little (sometimes nothing) in salary with most comp coming via commission.
This explains bad recruiter behavior, or at least much of it. Every deal might be 10-20K in the recruiter's pocket. For that amount of money, some people will do things they wouldn't normally do, and morals go out the window.
If you are able to manage the up and down cycle, its great.
Living in the EU is somewhat limiting in the legal and financial sense, because I am unsure about cross-country pay-outs, recruitment and legislation. Do you happen to have sources where I could learn more about these things? I might just make it a side-business to my existing one to refer people as a recruiter agency, not simply via already in-house acquaintances (which yield mediocre referral bonuses in many cases).
I'd go on LinkedIn and find a recruiter in your area - they may be willing to talk to you about the business. My blog (jobtipsforgeeks.com) has a handful of articles on recruiting topics as well.