Im not sure about a job position in a domain name, your not rushed for offers im guessing?
It would be better if the domains ended in an "s', like your other two consultingvacancies.com and
investmentvacancies.com. You could run a stand alone site with these two IMO
BUT, there exists an oportunity to sell the domains as a whole to a large recruitment firm in which they could advertise key jobs on seperate domains IMO.
So, given what we know, i would be thinking, at around $100 - $300 each, the two ending in "s" im thinking $300 to $500, but they may be a better sell as a package, maybe up to $3000 as a package.
Interesting domains IMO.