Oh - the anwer is quiete simple ...: Some people seems to have no shame - they took a model, retexture it and then selling other peoples work as their own ... This is in fact annoying and awfull - but some people believe they are allowed to do so ... I don't know how many poses I'll never offer or make only of the reason I don't have the right to give some props away because I lost the readme of the prop (or it simply had none). The different prices are easy to explain - the stores from what some models are sold have different amounts of percentage for selling the artists stuff - that's also normal for business ... Go into various real stores and buy a bunch of normal life stuff like milk, cheese, etc ... in every store the price is different ...