IVF offers hope when other infertility treatments are unsuccessful. It eliminates any barriers between egg and sperm by combining them in a lab. The growing embryos are then placed inside the uterus. Undergoing IVF can be unpleasant and expensive, with an average cycle costing $12,400. But success rates are growing every year. In 2007, pregnancy rates per IVF cycle ranged from 10% for women ages 43-44 to 46% for women under 35.