If I was a machine shop, It would makes sense to tell you to re-use your stock stuff because they make more money selling you the machining labor.
You said a mouth full there .
I have had 3 sets of 906's done , the cheapest set with the least amount of work done I have $1500 in them , and about 4500 total between the 3 sets.
It cuts both ways. I'm way okay with spending money at my local - high quality machine shop and get a quality piece in return verses paying to have something shipped to my door. Of course, I don't want to pay more and get less.
I personnally would not buy a cheap balancer. I would check out what I have, verify that it's not spun, and then keep an eye on it until I could upgrade.
I agree, if he is on a tighter budget, there a few items that he could spend less on without risk considering his performance level.
