Here is what I would do. Search for Vinyl in the site's main search bar. When results come up, find "CDs and Vinyl" in the department search area and click on the little blue "All" button to the right of the name. When the page refreshes, click on the "sort by amazon price" link -- that will first show all items sold directly by Amazon in the correct sort order, followed by all other search results sold by non-Amazon sellers. To exclude the latter, click on the "Sold by Amazon" checkbox in the filter area. Let me know if this is what you were looking for.
Thank you, but I'm trying to sort so that I only see the vinyl records. Not interested in seeing any CDs.
In that case I'd follow the same instructions as I typed up above, except I'd simply click on the department name rather than clicking the "All" button for that department. That way "vinyl" will remain as search keyword and you should see just vinyl records sorted in the right order.
Amazing. Thank you very much.