@BicCristal Hi there. I know it is a pain in the back, but if you ever manage to attach a price tag per piece on the items in your list, I cannot exclude that the community effort might even allow to free yourself of this “burden” of a collection in some way.
If what leaves you doubtful is the flood of micro-payments, and you prefer one single big check around the figure you had in mind for this sale, maybe we can find a trusted collector here who is willing to gather the money form the single-specimen buyers, and send you just one payment, to later re-distribute the pieces to those who have booked something, as many of us have done in past posts of this thread.
This has already worked for group purchase on this board — maybe the overall money on the table was less, I reckon — and may as well work in the future, with other large collections hard to move as a single lot.
Please forgive me if I repeated something you have already had to listen to many times; in my defence, I really would like to get some of your pencils, as many of us would I believe, and it is only my limited budget which prevents me to pull the trigger and get the whole package, even if only to trade or sell blocks later on.
Cheers! 