I've made several purchases through this auction company. A sellers fee is common. Almost all auction companies charge a fee, as this, and 10% is not abnormal. This company liquidates assets for many companies throughout the US. Just keep an eye out for when a sale is near you.
If an item can be removed by hand or hands, you don't need the insurance. That insurance requirement is for when one needs to bring in a crane, cherry picker or some other heavy equipment for loading a huge item. With all my purchases, on-site personnel, forklifts and other help was available for no extra fee. Folks were helpful where loading docks were higher than my truck bed, when things needed lowering into the truck.
I had an issue with some router bits I bought.... some were missing, when I went to pick them up. I was quickly refunded 1/3 my bid amount. I still ended up with some 300+ router bits and a few hundred brad point drill bits, for the after-refund price of $250. Some of you may recall a post I made regarding 3/4" shaft router bits. I don't have the machinery for using these, about 50 of them (not included in the above count). I still haven't found anyone with the machinery for their use. I'd sell them for $1 ea, but if push came to shove, I'd give them away.
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rack, pictured in the above link: I converted the bit holders into tilting holders in a cabinet I made for the bits....Pics 37 - 40 ~~~>
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were also 3 new grinding stones, within this lot.
Sonny