Maybe nobody want's your stuff. I presume your current camera has P,A,S,M, ISO, and WB. What you appear to need, maybe, are better lenses, perhaps to do the sort of things you want to do. Now, having chosen Sony, you are really committing to buying mail order, because they will not have a widely available stock in the stores. For that, you should have chosen Nikon or Canon.
If it doesn't sell, I'd recommend you order yourself a nice lens and get to know the art of photography, and not worry so much about the silly differences in equipment. If it does sell, well, choose a system. I really don't care what, but choose it carefully. Take your time. Do your research. Then get a system that you can use for a long time.
Nikkors: 17-55mm f2.8, 18-200mm f3.5-f4.5 VR, 70-300mm f4.5-5.6 VR, 35mm f2, 50mm f1.8, 55mm f2.8 AI-S micro, 105mm f2.8 VR micro
Other Lenses: Tokina 12-24 f4, Tamron 75-300mm f4-5.6 LD macro
Stuff: Nikon SB800, Nikon MBD200, Gitzo 1327 Tripod w/RRS BH-55LR Ballhead, Sekonic L-358 meter