I think you can buy from online for a lot less than what an LBS will charge safely.
Really the only two things you need to worry about IMO is the drop design. Compact, round, ergo or anatomica. I found some compact handlebars two squishy, my hands felt squished and my palms couldn't grip 'em, that's me. Pro 7S is perfect for me. Anatomica was too straight and odd when reaching for the brakes/shifter. The other issue would be width. Just remember, narrower = more control, wider = less. You won't be able to turn as fast with wider width. Some go 2 cm more than the two bones on your shoulder, others go 2cm less. I went 2cm less. Some claim that narrower = more speed, more aerodynamic and your shoulders are naturally pulled inward more. I don't race so didn't matter much. I just found it easier on my shoulders and elbow than on a wider handlebar.