Cracked belts and technical inspection

In preparation for a high performance driving school I had the car tech-inspected by BMW of Seattle. http://bmwpugetsound.com/track_tech_sheet.pdf. It's nice that BMWCCA has an agreement with BMW of Seattle to only charge about $35. However, they failed me for cracked belts, which they told me a month earlier was no big deal. Strange. They wanted $210 to replace the belts, I already had the parts from pelicanparts.com so the labor was $120. I think the belts were about $30 from pelican w/shipping. Took about an hour to do. I also have my tech inspection so there is nothing stopping me from getting schooled on SIR!