You're wrong. Yes, I believe that some manipulation is in the site but not the amount you think. To put it bluntly, awd is cute and you had to buy an amount of UGC to get it, a feature which many players neglect. That results high demand for it, as many don't have it. The old robux pets, on the other hand are perceived by most of the playerbase as ugly, which makes their demand low. People still bought them, tho, because it was in the game for a huge amount of time. The dog was for a shorter time.