I used to wonder the same question, since I'm still unable to seamlessly navigate the site, but the only thing I have done with some success is use the search function and don't choose a minimum or maximum price to it pulls all products and hit 'search' to populate a complete list. At least, I recall that working, sorry if I'm mistaken.
I will say though, that it does pay to search through the site category-by-category... you'll be reminded of or at least re-educated on a few products that you might have forgotten about!