In article , "Ben Smith"
writes:

Blackstone-labs.com charges $20 for a single report. You can buy several in
advance for a discount, but not much of one.

Will CTC let you buy 5 in advance? That way you can stay with your current
lab, and get around their minimum billing scheme?

ThanksBen for the advice. I called CTC and , first, they reduced the $25 to
the old price of $18.40 "this one time". Second, they do sell 10 prepaid for
$150. Being the engineer that I was, I figured that with two oil changes a
year, I break even with 8% ROI.
I ask them why they do the "$15" per when the $18.40 was not cost effective and
the answer - besides the cost of billing - was that they expect you to "lose"
one during the period. This kind of honesty need to be rewarded, so I think
that I will stay with CTC and buy the 10 pack ( and try not to lose one).

Chuck