I sold mine about a year and a half ago for $1000 AUD, regular unlimited at the time was about $300 AUD, not sure if the ratios are still the same though
There is no “reasoning”. It’s a mix of stubbornness and incompetence. The copyright year is one of the major detail fields going back to their paper grading form and the 1999-2000 is a clear and easy to spot variance from 1999 copyright. They also recognize the 1999-2000 packs already.
Honestly it would be easier to get a layperson to identify and distinguish between base unlimited and base 1999-2000 than base unlimited and shadowless IMO. I could teach someone a foolproof method (check location for copyright date), show them the two variants and they’d discriminate between the two 100% of the time. Shadowless however is a lot less clear and easier to confuse between the two and would need reminding.
I know. I said that with a deer-in-the-headlights manner of tone. As in they wouldn’t know what to do/say if asked. Evidenced by the generic response received by an earlier poster.