Amazon has the 10.5oz Happy Belly Cream of Mushroom Soup for $0.88 with free shipping on $25+ or with Prime (extra 5% off for 5+ S&S orders). Excellent filler item to reach the 15% group discount on S&S. Other soups around $1:

• 10.5oz Chicken Noodle Soup for $0.86
• 10.75oz Tomato Soup for $1.10
• 10.5oz Cream of Celery Soup for $1.25
• 10.5oz Low Fat Cream of Chicken Soup for $1.20