abraham.b...,
I'll be honest. I have been trying to attract crows by my crowbox since around Christmas of 22 with no real progress yet. I recently taken in my crowbox to make some modifications (clean, mount dedicated camera, design other 3D printed accessories, etc)
I am going to go back out and try again soon. Fighting the squirrels has been a problem, but I am putting out a squirrel baffle that I think will address this problem and allow me to make more progress with the crows.
I have read articles that doubt that this project really works, but I believe I have seen many more examples of this project working (at least in the early stages).
Since I recently built this project, I would say the cost for a full kit would be between $300 - $500 depending on the quality of parts and accessories you decided to go with.
(I don't have a kit I am ready to sell yet. If you are really interested, reach out and I'll see if I can come up with something cause I do have extra supplies left over)
Thanks,
MK