is that Patek have adisproportionately long list of people wanting the watch, so they are more or less instructing ADs to take no more orders... The list goes out several years... It is like going into a Rolex AD and asking to be added to the Steel Daytona list in that regard. Some will if you know them VERY well, and most just won't bother with you.
2,850 Patek Philippe listings are live on the eBay market and 1721 collector listings on the WatchProSite marketplace.