Some feed mills make their own 32% catfish feed and sell it for about $10/50lbs. Bulk sells could probably be arranged for less. However, higher protein feeds usually are not available at the mill level. TSC carries a couple of 32% brands at around $12/50lbs and a 36% is a special order at a somewhat higher price. If you are looking for 41% pellets for bass, you will probably have to deal with a feed store and pay well over $20 per 50 lbs.