Valve clearances....

The tracky has done quite a few track days prolly 10-12 since the clearances were last checked (apparently
I have trust issues with mechanics
) and was wondering if it's worth having a go myself?...If not how much should I expect to pay?....I spoke to a couple of places a few months ago and got quoted between $400-$650 to have it done with the bike already stripped down (fairings off) if this about right?....Not in a huge hurry to get it done as the next ride day I do will prolly be the Xmas trackday 


