Nice WIP! I'd start out with $5 for the base scene, and add a dollar for each extra prop that can be removed and seperatly posed. So, for a base scene at $5., add the trashcan, the matress (great prop), and 4 or 5 litter items. Total between $15 and $20. $25 if you get a lot of options and props. The props don't really have to complex. The idea to me is the more use I can get out of a scene, the more its worth to me. I'd also package it as a .cr2 file with all props, then seperate prop files for easier use. It does need something to break up the wall, and maybe antother door/steps that can be turned off, or windows. What would be REALLY great is a clothsline and some cloths to come off of the building. Cloths on the line can just be towels with a bumpmap, so it shouldn't be too complex to do. To me it looks like a back alley in a residential area in a bad neighborhood. Good start! Keep at it! When its done, I'll probably buy it. I'd love to do a New York 1930's back alley scene.