I can explain something, since I worked for a anime-publisher before from around 2004-2007.
The reason why anime-DVDs were expensive af wasnt because of the western publishers, but the japanese publishers.
Let me show how a negotiation went:
"Hey. We would love to buy the rights to your anime Haruhi. How much is it?"
"You cant buy just Haruhi. If you want to buy a popular anime, you have to buy Formula 1 anime that no one even in Japan watched. So you have to buy the rights to our shitty anime if you want Haruhi."
"Okay. That will be expensive, since no one will buy the other anime, but okay. So what kind of bonus material can we use?"
"Bonus material? The price is just for the rights. If you want bonus material, pay more. If you dont like it, take it or leave it."
"We just want to print a small poster."
"Yeah. You need to buy the rights for that too. We wont give it to you for free."
Thats how it worked. So actually you didnt just pay for Haruhi, but you had to pay for 2 anime and if you dont want to lose money and still get some, you have to put around 2-3 episodes per DVD for 25-30€.
I can tell you that the western publishers wanted to release those for 12-15€ each DVD, but they just couldnt, because the japanese dictated eveything. From the price, to bonus materials, to the coverdesign, to marketing...
Also here is an explanation if you were always asking yourself why some publishers released trash anime. They got the rights by buying a popular anime, so why not just release the bad anime.
I just post that here, since during that time a lot of people were accusing the western publishers to set the price so high to make a lot of dosh, but thats not the case. The japanese publishers were a pain in the ass to work with and in Germany a lot of publishers left the anime-market because of that. A counter-example is when you buy the rights for an indian, chinese, korean or taiwanese movie. Its "We give you 100.000$ for the rights." "Okay. You can use it for 5 years. Here you go."