Check the listing for details. Precor 731 Treadmill. Condition: Used. Listed at 1250.00 USD. The Precor 731 Treadmill is a high-quality fitness equipment designed for gym and training purposes. Manufactured by Precor, a reputable brand known for producing durable and reliable cardio equipment, this treadmill offers a smooth and comfortable walking or running experience for users. With its sturdy construction and advanced features, the Precor 731 Treadmill is a great option for those looking to enhance their fitness levels and improve their overall health through regular exercise.