FYE is currently running a 25% off Used DVD sale, coupon code 25USEDDBR8. The sale clearly states Blu-rays are excluded. For most Blu-rays, this is true (the coupon won't apply).
However, through some trial and error, I determined that it will apply to some movies. They are mislabled (or unlabeled) as DVD's in FYE's database, and their system will let the 25% off discount apply to those Blu-rays.
Now, many of FYE's prices are too high anyway, so even at 25% off, they aren't a deal. However, with a Backstage Pass membership (additional 10% off), you can find some okay deals.
I was able to get Corpse Bride and a Harry Potter Film for ~$25 after tax, using the free shipping (for orders $25+), BP membership 10% off, and 25% off coupon code. Not killer deals, but considering both films sold for over $13 on Half or Amazon + $6 shipping there, it was enough of a discount for me to bite.
I don't have a list of which Blu's will qualify, so you will have to trial and error there. I know it worked on Golden Compass ($17.50 w/ discounts), BS's Dracula ($11.15 wD), Gone Baby Gone ($13.50 wD) and there were a few others I tried. I found at least a dozen in my limited search, but most were overpriced. I didn't look at them all though, just ones on my want list.
Also, FYE's site is inconsistent with Blu-ray searches. If you go to the used section, it returns about 140 titles. However, if you search in the new section, and scroll through all 800+ titles that it returns, you will find more than 140 used titles. The filter on the sidebar only says there are 19 used titles, which is clearly wrong.
Your best bet is to search for the titles you want, or brute force through all of them with the provided link. Also keep in mind that they only have 1 used copy of most movies, so the quick will get the best spoils.
http://www.fye.com/viewfdsearch.htm?...&query=blu-ray