Put more investment in the bulls. Your herd sires and AI sires influence is huge for generations to come. Identify the cows that are really working in your herd and save every daughter you can from them. They are adapted to your management and environment and will be your most consistent producers. If you go elsewhere to buy females, I agree with looking for bargains. High priced cows are just that - high priced. You don't want cows that look their best the day you get them home. Find breeders that have similar management to yours and a health/testing program you're comfortable with (Johnes, BVD PI, etc). If you can find someone that NEEDS to sell, those are your best bargains. The fancy sales from the hottest breeders are good entertainment, but in my opinion, not the best place to find the best value. Be patient, work hard at your AI program, and base it on PROVEN bulls.