The stats I gave about the numbers of rotators according their number of digits was simply based on the number of different digit necessary to built the entire serial number. This was was simpler to my mind. A "6" is a "6", regardless the rank it fills in the number. And I found that the logic was also preserved: the rotators that are made with the most digits should be aslo the more common, hence the less expensive.
Do you think that a 4-digit rotator as 0968960 could worth more than 8008008, simply because there is only 12 of them, against 43 2-digits rotators (according to the last system) ?
Just ask this question: which number is the more desirable: 8008008 (a 2-digit rotator according to both systems) or 0990660 (a 3-digits rotator for me, a 2-digits according to CJ)?
Incidentally, I never found a rotator in my search, and I don't have any rotator in my collection....