yes this is one of those things that is scaring people but if you pay $500 some other guy can magically do it for you. The fact is that it is not that hard of a job and the dangers can easily be mitigated if you have some basic common sense and knowledge. Unfortunetly common sense is not that common and many people have been hurt doing this job. I myself would not hesitate to do this job like you say lots of information now days on how to do it this site is 22 years old in this post so now days you can see exactly what to do in many videos way before even attempting the job and that alone can take away most of the risk since you get hand held the entire process. I have to say I am a little disappointed in the HN crowd at how shy they are to do this job. All the handy men that do this job now are just humans like you and me and they all had to learn from scratch at some point. Again this is not that hard or dangerous but like the article says it has by shrouded in stories of danger and the trades people would not share their knowledge but told everyone how dangerous it would be so pay them money.