Woot offers Marcy 25 lb. ECO Standard Grip Plate for $34.99 (orig. $40.99). Free shipping for Prime Members. 

Product Description:
Marcy Classic Cast Iron Grip Plates come in various sizes: 2.5-, 5-, 10-, 25-, and 50-pounds (sold individually) These plates can be used with or without a 1” standard size barbell or dumbbell handles. These grip plates are versatile and can be used for a variety of exercises. You can expand your workout routines from warm up exercises to intense muscle building exercises with these grip plates. They can be used for deadlifts and lunges as well as overheard presses. The grip plates feature a three-hole design for easy handling. Marcy Classic Grip Plates are perfect for any home gym.

• The Marcy Classic 1” Standard Grip Plates are made from high quality materials with rust-resistant finish to withstand years of daily use.
• The center hole of Marcy Classic Standard Grip Plates is 1-inch in diameter which fits most standard weight bars. Each Marcy Classic Standard Grip Plate is designed with three-hole grip that allows for easy and safe handling.
• Marcy cast iron grip plates can be used for warm up exercises, muscle strengthening exercises, endurance training, etc. to tone and define muscles and to increase overall strength and stamina.
• Sold Individually.