Searching for a new graphics card on Amazon? 98% of what you want will be “out of stock”, so there’s a handy new UserScript that shows “Amazon in-stock only”. I’ve looked at the code and it’s clean.
For those using their national Amazon rather than the main .com it needs some slight tweaks to work. It’s easy to run it on my Amazon UK, but there you change the detection-phrase from the capitalised “Out of Stock” to “out of stock”.