Great feedback, I've addressed some of your points here:
This sounds rather like trying to reinvent the wheel, and then sell it for peanuts.
To make any sort of decent profit on the items...
It's entirely possible that we have different definitions of what constitutes a "decent profit." I'm a college student with a 9-5 job, so 100% of profits on any sales that may happen here basically translate into the ability to buy film, paper, chemistry, and maybe a lens or another toy. This project is first and foremost for fun because I enjoy creating things. If I walk away having spent a 200 hours on the project and pocketing $2,000, that doesn't translate to "$10/hr" to me. More like "I did a fun project and happened to make $2000 on it."
In this mostly digital photo age, what is the market for a new processor aimed at the declining numbers of analog shooters who still process film and make prints?
Well, if the 5 odd people who replied to this topic saying they would purchase such a unit at a <$500 price point are any indicator, then the market is big enough to be worth my time

I'm not looking to start a company here, just do a production run on a unit that makes life easier for those of us who do still process film. I firmly believe there are enough people who are processing their own film (or want to try) to create a niche market for a product like this.
Apologies if I seem to be negative about all this, but I've been around long enough to see many such projects start with a big bang, and end up with a whimper.
No apology needed - I need honest feedback, not pats on the back

Appreciate your thoughts.
All the above stated, I accept it may be that there is a viable if limited sale market for this item, but a $300 sale price is unrealistic and a fast road to corporate bankruptcy for the makers. This said, I am quite interested in the project, I've bookmarked the post and I'll follow this thread. If you decide to go ahead with it, my very best wishes and good luck.
Our $300 target price seems to be giving a lot of people "reverse sticker shock." Despite the skepticism, the closer we get to validating all of the components we've sourced to ensure that they work, the more confident I am that we probably won't be too far off from this price point. I suspect the magic sauce here that's making this possible is nothing more than my own standards for how much profit I need in order to justify the project to myself. Certainly wanting to make some money is a factor, but it's far from my top priority. As I stated before, if I go through all the effort to design, prototype, and build a machine that does everything I want it to, and not one soul buys it... then I'll go to sleep with a smile on my face because now I have a machine that takes some of the grind out of my own photography hobby and frees up time for shooting and printing. If 5 people buy it, I'll go to sleep with the same smile on my face immediately after placing an order for some Ilford MG FB, 4x5 FP4+, and Fixer
