The Market search is pulling up new volumes in a series just fine, but then is treating them as duplicates--both in the search results and at ordering. Different volumes in a series are not duplicates.

So far, what I'm seeing is that while the series is noted in the Details area, the volume number is not--only in the Description.

The volume number should be front and center on series. It not being made more clear is confusing from the selector's point of view (and I'm a former Serials librarian, so not like this is new to me!) and the duplicate notation at ordering leads to more steps for the person reviewing/placing the orders.