Truing = $15 per wheel. Building one is easy, handing it over for final truing gives peace of mind.
I have Campy Records, sourced Campy rims and did the calculations for spoke length here -
http://www.damonrinard.com/spocalc.xls
Bought the spokes at Nashbar, assembled at home in an hour, and Erik's trued them up. Done for $31 in labor.
As usual, labor = $. I understand keeping the little guy in business, but keeping money in MY pocket comes first. I tend to piss away most of my money too.