A page where the "dead lay" aka Expired Top Deals will be a good page for those who would like to check the top deals they may have missed or just for quick reference.
Related to this, once this page is created - hopefully the Front Page/Main Page Top Deals will be rid of expired/out of stock deals. It's a bit frustrating to click a link, only to find out it's expired/out of stock. It's better to only have active running deals on the front page.
Umm…. that's why we have the Search function in this site.
Instead of having one thread that lists all the best prices for Android handsets (for example), and desperately trying to keep it updated… you could just search the make/model and find all the deals out these.