I have some Funimation DVDs that will never make it to blu-ray like Witch Hunter Robin, Kanon, Air and a few others I don't remember offhand. Those came from Rightstuf but I also got a few OOP things from ebay like Sentai's Living for the Day After Tomorrow. I kind of gave up on trying to buy series that were released as singles, because every time I tried to get one of those, there's always one volume that is either completely unavailable or sells for crazy high price. I wanted to buy Madlax but had no luck due to that. I haven't looked in a long time but I doubt availability has improved. I also try to only buy unopened discs because I can't trust that I won't get something scratched to hell buying used which makes it harder.