Hiring a Cold Caller

[Catie Fihn]

Is it worth it to hire a cold calling company instead of doing the cold-calling myself?  The company I am considering states it would call for 4 hours per day, 20 hours per week, and generates an average of 6 leads per week.  I have never cold-called before, so unsure if I should do it myself or go straight to hiring someone out.  Looking for the pros and cons of both.  Thanks!