You certainly have more control over your eqipment if doing it yourself. If you go through a ton of fletch (like I do) than it can be cheaper. My buddy has a small shop and he let's me use his saw but I fletch them old school, right helical, one at a time on the Bitzen jig.

Mostly I just do repair work due to lack of time. I work a lot and when I have free time I'd rather shoot than fletch.