i got just a eos 1000d ...it is low budged i know but with a good lens it works for me ... with a good lens it makes good photos ...but it is always not only the hardware that makes a good picture ... i also made some photos with my handy and got something I really like and i saw ppl with a 800 euro camera thinking the camera got to make it all for them ...including finding the right motive and theire pictures were ...mmmh ... letīs say i never understood why they made a poster from them
"Fixing up" a big problem in a digital p&s camera, unless it is an extremely expensive one, is almost never going to be cost-effective, especially if it is a sensor issue. You'd almost certainly do better to get a new camera. $300 will buy you a nice Canon p&s and that is probably where you will find the best compromise of quality, durability, versatility, ease of use and reliability.
It's technically there, but it's pretty much completely worthless. Between the lack of responsiveness in the controls and the lack of precision, it's best to pretend like the camera doesn't have it at all. The CHDK doesn't change that at all.