Old versions of Poser, the modeling/animation software, can often be gotten for under 100 USD, and some are even under 50 USD. In that case, it's a great way for many people to get started - who wouldn't otherwise. However, though, the newest and freshest software is often quite expensive, normally around 400 USD it seems. Anyway, where can old versions be found? Well, two big places are Amazon and eBay.