Poser is a hobby for most people, so you won't get too many items that are successful at $50+. Most people can't fit that into their budget. Yes, there are places that sell models for 100s of dollars, but who knows how many models those people actually sell? They may take the view that all they need to sell is one model in order to make it worthwhile. Here, you get less per model, but you have the potential to sell a lot of models. Cheers!