I'll agree with gbent.
Yea, the auctioneer takes a cut, but it doesn't take too many bidding wars on pieces you would have priced too low to make up for it. Getting 85% of $100 is better than 100% of $50.
Last auction I bid at, there were a bunch of decent bench grinders, all of which were missing the guards, rests and shields. I expected them to go for $25-$50, and they all went for $100 and up.
5C collet fixtures you can buy for $25-$50 on ebay went for more than double that, and virtually all of them had oops marks on them.
Also, what is your time worth?
We sold my dad's basement machine shop and it took more than a year (we have day jobs), and we still have hundreds of pounds of tooling left that I am still sorting.
I have hundreds of pounds of fasteners, 50 lbs of drill bits, probably 100 lbs of end mills. I could sell them all as scrap, but that would be literally 5-10 cents on the dollar compared to what they are worth in a more organized fashion.
Steve