UGH and my wife wonders why I tear my hair out everytime a report comes out.
Audience
Our audience is the average Joe consumer - the guy who washes and waxes his car a few times per year, and is looking to learn a little about the process and hopefully know a little more about the products he's considering purchasing the next time he's out shopping.
Autopians and professional detailers are not our primary audience - never have been, never will. Why? Well, if you must know, less than 10 known Autopians purchased our Wax Test and less than 20 have purchased the Glass Cleaner Test...pro detailers account for about 100 total sales of both reports as well.
Availability
Availability grades are extremely critical and should probably get a higher percentage of the grade than what we give them. Why?
I get about 100 e-mails a month from people complaining that P21S is only available online, or that Souveran is only available online...how dare we give it a B for availability!
The majority of people DO NOT like shopping online - all of us here don't mind it, but we're used to it, and we're willing to go through some of the hassle to get products that we feel are better than "over the counter" type products.
More than 70% of our orders come via the phone line because people complain that they will not give their credit card out over the internet. Whatever their reason, that's their right, be it accurate or inaccurate.
Our criteria were as follows (again, remember, we have to take space constraints into consideration, especially when the report is a download only, which is why the detailed explanation isn't in the reports):
A = Available just about everywhere - places like Wal-Mart, Target, Auto Parts stores, grocery stores, etc.
B = Readily available - certain auto parts stores, most online stores, catalogs, etc.
C = A bit tough to find - available primarily online only, but still can be found without too much seraching/inconvenience.
D = Limited availability - only available from the manufacturer or an authorized vendor, primarily online or through the mail (places like: griot's, Zaino, etc)
F = Really hard to find or discontinued. Would require a lot of effort to buy it, and may no longer be available.
The grades are relative to our experiences - we have anywhere from 3 - 10 people shopping for products for us, and they're located in various parts of the country. We put out a list of "to buy" products, and people look for them. When they find them, they report back to us with location, price and availability. From there, we determine the availability grades.
Now, imagine if I had to fit that entire explanation in the report, along with similar explanations for all of the other grading criteria? Next, people will want to know what shoes I was wearing when I was testing products, because a soft soled shoe might increase the amount of effort by reducing the amount of leverage that I get from my legs...
Rankings
I'm sorry that you don't find the availability grades useful, but if you'd like, I'll let you answer the phones for us and answer the e-mails. After about a week, I'm guessing you'll wish that the availability grade was the only grade listed because people would then stop calling you to complain about product availability.

Besides, what's the #1 complaint with Zaino been for so many years? "It's not available in the stores or online!" So, availability is important - you'd be surprised at how many people are interested in where to buy products and how upset they get when they can't find them locally.
Consider the guy who's doing some last minute detailing and tries to find BlackFire at his local grocery store - he's hoppin' mad! So, obviously, availability plays into his detailing plans and will affect his purchasing decisions.
The tests are what they are. I welcome anyone else to go through the headaches, the hassles, the expenses and the problems associated with testing products - it's not a cake walk by any sense of the means, and there's little to no profit in it. It's a labor of love, much like Autopia is for all of us.
Hope this info clears up the misconceptions and/or confusion - but rest assured, availability is extremely important to people other than yourself.