Anyone who understands the steam market willing to chime in?

The short answer is no as above
Since you'll most likely put it at a much higher price than market value to effectuate the trade, you can take advantage of the fact that the marketplace pages are sorted by price. Start from the last page (most expensive) and work backwards until you hit the correct value (yours, confirm by price+name+avatar), then inform the seller of the page number and ask him to check your name+avatar to make sure, especially if there are multiple listings with the same price (usually rare in these scenarios).

There isn't a way to search for a particular market listing, but the way you're doing it basically allows you to sort by price, and assuming you're both using the same currency it'll be a little bit of page clicking on their end.

Also, you only get an 85% cut, but that's a secondary issue.