The only other thing is the "coolness" factor of having it to look it.
You, and anyone else gestating the thought of buying this collection, will get over that soon enough and it will just become part of the background. Then it will weigh upon you and you will want to be rid of it. Is that what happened to the present owner?
If you want to look at parts bins filled with stuff you don't need, go to your local electronics shop.
BTW, I have the sickness as bad as anyone. Don't think I'm preaching. I'm writing this for my benefit too.
As somebody who has a substantially larger collection of new and packaged components I can only shake my head in horror that anybody would consider buying this lot. It's just not worth the time, space and investment. Just buy what you need when you need it, searching for ages for components of questionable quality amongst this lot is a world a pain.
Every day I find myself buying new stuff from Farnell and RS, despite knowing I have a box full of the exact thing I need piled up somewhere but I just don't have the time to dig it out.
I could post pictures that would make that guy look like a beginner, I wish I could get rid of it all in one simple auction.
After a good sleep, a strong cup of coffee, a quick misguided tour of my own inventory and the revelation of these above two post's, I would now like to invert my vote, it was going high but is now switched low, sorry for the indecisiveness and inconvenience.
Furthermore, if the retracted bid was at $600.00 then to me this would indicate that the current bidder's maximum is just below that figure and $600.00 buy's a fair bit of what you actually need. It's not over yet and the bid's could potentially go a lot higher.
Good luck to him or her, it might actually be someone you know.
Muttley