I wouldn't sell mine either, and pretty much for the same reasons as PeeWee. An additional reason for me is that I want to use it with a retro adapter one day (have the adapter, but using it needs bright light and right now is not the season for that). IIRC you have the 28-135mm? Are you sure you won't need something in the 18-28mm range? Might be better to keep the kit lense for now until you are certain - or decide to buy a dedicated wide-angle lense. But even if you want to sell it, your price may be too high. I think a lot of folks buy the XTi/400D with the kit lense, so I doubt there's much of a market for it - not to mention that it doesn't exactly have a shining reputation, which will push the re-sale price down even further. Maybe you should check out ebay to get a feeling for the current going price right now?