Don't believe so. These are the more easily found when you go to search for things because you see the word 'Audiocassette' in green. There are laserdiscs, too. Also some vinyl LPs. It's a forms-based page.
Results come up in table format.
Just type in keywords on the form command line. If you like, you can go to the page with the more thorough search options, which has some popup menus. The store uses one of those animated .gifs on the front page, and of course there are the forms and tables throughout. You can apply limits based on release date, manufacturer label, or media type. It's pretty pointless to talk of an 'average' price for this store, because they can have several different versions of an album from different countries and the exact contents of each album can vary slightly.