I have a friend who wish to start with photography. she have economic problems and she's budget is 80 euros.
Some Canon refurbished cameras with manual controls have been selling for ~$50-$100 on the US canon site. If they do something similar for Europe, it might be a good option. The refurb SX160 I got was like new for ~$50.
The S series like the S90, S100 or S110 sometimes show up for ~$100, and have raw and manual controls without needing CHDK.
previously I spoke to her about how important is to have a camera that shoot in RAW and can take photos in manual mode so she was excited to learn using lightroom and I could teach her or give her some tips to start.
FWIW, it can be quite difficult to get better results from CHDK raw than the canon jpeg. For a camera that has raw in the factory firmware, most raw processing programs will give you pretty good results with default settings. With CHDK, this is often not the case, the calibration in CHDK isn't very good, and the low end cameras lots of noise and of optical defects that you have to correct when you use raw.
For someone getting started on very low budget, it might be better to just focus on composition and exposure and not worry about raw.
and if this could be the right solution for her. my fear is that it could be complicated to menage, she have not knowledge about those thinks.
CHDK can be quite technical and not very user friendly.