Petco offers Animaze 1-Door Folding Dog Crate, 18.5" L x 12.5" W x 14.5" H for $14.97 (reg $59.99). Free shipping on orders over $35. 

Product Description:
The Animaze 1-Door Folding Dog Crate requires no tools to assemble and features a foldable design that's easy to store and transport. A removable, leak-proof crate pan is included, so you can quickly clean up any accidents. Consistent crate training can help housebreak your pup by providing them a space that supports their natural instinct to seek a private space of their own.

• - 1-Door Folding Dog Crate from Animaze
• - Can help support your dog's natural instinct to find a haven that's just for them
• - Includes a leak-proof plastic crate pan that can be easily removed and cleaned
• - Features a foldable design that is easy to transport and sets up with no tools required
• - Slide-bolt latch features paw-blocking technology
• - Rubber feet helps keep crate in place