You can purchase Slayers all over the place.

Some places to try are:

Slow as Hell Anime. -

• Try
• Movie 3: Slayers Great
• Movie 4: Slayers Gorgeous

Software Sculptors -

• Slayers
• Next

ADV Films -

• Movie 1: [Slayers Perfect]
• Movie 2: [Slayers Return]
• Slayers-The Motion Picture
• Slayers: Dragon Slave!
• Slayers: Explosion Array!

Ebay

• All sorts of mis. stuff

You can purchase the films published by Software Sculptors and ADV Films at your local video store usually...so i recomend doing that.

I have personal purchased from Slow as Hell Anime so i can voch for ther reliability...a little slow though ^_^

Ebay has all sorts of stuff but be carefull not to get screwed by someone.