This is so true. On top of that, regulators are actually very simple. 2nd stages are no brainer to do service on your own. You don't even need any special tools, but if you have a lot of regs, tools will make it faster. Since start owning HOG, I have been doing 2nd stages myself, including SP 250V and Atomics. I was afraind of touching the 1st stage due to higher pressure concern and lack of the proper tools. Then one day, I picked some scuba wreches on ebay, and I was like WTH, let me take apart an Atomic (which is due for service), worst case, I will take it to the dive shop. And found 1st stage is not much worse than 2nd stage. Having that said, they do take some time to do, because of the cleaning and soaking, and adjustment after re-assemble. To me, it is not too unfair to charge $60-$75 for labors for all 3 stages. My main issue with taking to a shop is rather the turn around time. the two trip to drop off and pickup the set from a shop is enough for me to do it myself.
As for part cost, I think it is ridiculous. It is about $25/stages for a couple of o-ring and a seat. What is the better way to get these replacement part for lower cost?