It's no bull. When you've got as many snakes as some have, the cheaper snake and snakes they plan to sell are usually put on a maintenance feeding schedule. This meaning theyre usually fed smaller prey items and a little less often than what you would feed to a snake youre trying to get to breeding size. You cant compare a snake that the person is trying to sell to a snake you're pushing to get to breeding size. I'm not saying its bad or good but the regular person that is trying to get their snakes to size tends to feed a little excessively. The snake you were looking at hasn't been underfed or malnourished...it just hasn't been fed heavily in order to get it to the biggest or breedable size.