The X-Files: Complete Season Slim Set (DVD) for $12.49 Each.  Here is a screenshot for your reference.  Shipping is free on orders over $25.  If needed, use this Filler Tool to pad the order for free shipping.  The complete collector's set usually goes for over $250.

• The X-Files: First Season (DVD) for $12.49.  Other places have it for $28.
• The X-Files: Second Season (DVD) for $12.49. Other places have it for $34.
• The X-Files: Third Season (DVD) for $12.49.  Other places have it for $34.
• The X-Files: Fourth Season (DVD) for $12.49.  Other places have it for $20.
• The X-Files: Fifth Season (DVD) for $12.49.  Other places have it for $20.
• The X-Files: Sixth Season (DVD) for $12.49.  Other places have it for $20.
• The X-Files: Seventh Season (DVD) for $12.49.  Other places have it for $20.
• The X-Files: Eighth Season (DVD) for $12.49.  Other places have it for $20.
• The X-Files: Ninth Season (DVD) for $12.49.  Other places have it for $28.