Is there a way to know what the most expensive item is on Ebay, currently for sale?

Why?

No. You have to pick a type of product first.

You can do a Google search. I found several listings

I saw this on Financesonline.com
They have been sold.
Gigayacht – $168 million
Gulfstream II – $4.9 million
Lunch with Warren Buffett – $2.6 million
The Town of Albert, TX – $2.5 millon
House With a War-Proof Bunker – $2.1 million
The Town of Bridgeville, CA – $1.77 million
Honus Wagner Baseball Card – $1.1 million
Ferrari Enzo– $1 million
Shoeless Joe Jackson’s Baseball Bat – $577,610
Ian Usher’s ‘Life’– $309,292

When you do your search, you can have it sorted by highest/lowest price. I don’t see a way to find the most expensive item on the site, but there probably is a way. I’ll keep on looking.

right – it doesn’t seem like there’s a way to search for ‘everything’.