Seven things to consider before engaging a headhunter

Cost can also be a key indicator as to whether you’re dealing with a headhunter or an agency. Whilst everyone enjoys getting a good deal, headhunting simply costs more as standard because it requires an awful lot more legwork and risk on the behalf of the supplier. If a business is willing to do it at considerably lower rates than most others are quoting, or if they’re willing to do it without a retainer payment, then they categorically won’t be headhunting for you.
http://www.executiveheadhunters.co.uk/blog/21/seven-things-to-consider-before-engaging-a-headhunter-part-two