I see people auctioning lots of them by 90 each, but with the taxes they end up getting less than 83 each. I offer 85 each, that way you get a benefit of 5 each over tool vendor.
I want to buy large sums directly(100+, and there's no limit, if you want to sell me 1000 go ahead :P), and I'll probably be able to teleport to you.
What are you waiting for? Be my business partners ! :)