If you don't have a problem with opening a camera up and soldering to small contacts, or sliding in a shutter assembly, and have time to do some reading on the subject before attempting, it is well worth it in my opinion. I went through my share of commercial cams years ago and started to build my own homebrews. I'll never go back now. I have 7 so far and one IR video unit. One good thing is the quality of photos, and if any of them have problems there are a few good homebrew forums around to ask questions and do the repairs yourself. Rather then sending it back and not seeing it for weeks.
After doing it once, opening up that camera to hack it is alot less intimidating. The rest of the wiring to the board is very easy and straightforward. I don't do the small soldering myself, i usually send it to someone else to have them hack the camera for me. Another thing i like is that you can view the pictures right in the field so you can make the decision right then and there whether to move it, or leave it there. You can also take the camera out and use it as any normal camera for harvest photos.
I will admit, the commercial cams have made great strides in price and quality from the last couple years. I just have more fun building my own, a little more satisfaction when i see those pictures.
