Wheel truing is an art that I believe all cyclists should learn (especially clydesdales, or people that ride on low-spoke-count wheels). It's really not that hard. I learned simply by watching a few youtube videos, have built several wheels from the ground up, and have trued countless wheels for friends and family.

I'm no lightweight, and I knew that my wheels would have to be trued more often than most others'. I weigh about 265, and my commuter is a 2012 Trek FX 7.5 w/ 24 spoke wheels. I rebuilt them using Spoke Prep, brought the tension up, and have put over 800 miles on the bike, since. I just put the rear wheel on the truing stand a couple weeks ago, it it was off by only about 1mm laterally in one spot. 1/4 turn of one spoke, and it was straight again.

Besides saving you time and money, it also gives you a very rewarding sense of accomplishment.

Oh, and you don't need to have the Professional Park Truing stand. I have a cheap portable one that works just fine for me.