$3500 is just the beginning. Tools, Air compressor, coolant system, software, vise, saw, measuring tools, etc, etc.
I got my first CNC for around $50k. Very basic 3 axis HAAS TM-2. An additional $10k was immediately needed for starter tools, tools holders, workholding, a saw, basic measuring tools, and some horrid software called Bob CAD/CAM. Every job I did, I was short a tool of some sort which had me adding another $10k to the cost within a few months. The Bob CAM software was so useless, I had to spend about $13k on Cam Works. Now around $83k.
After spending months getting up to speed (many hundreds of hours over 16 hour days), I was able to make just about any part I designed in Solid Works - S-L-O-W-L-Y. It was literally too slow to be commercially successful unless I was ok working for $2/hour. This was a 6000lb CNC with tool changer and coolant system and I owned it outright (no payments).
I could not get very far until I got 2 full size 5 axis machines, MasterCAM and a whole bunch of fancy work-holding and tool holding. But that cost another $400k. At that point, I had enough speed and capability to create a business.
Clearly this Kickstarter cannot come close to a professional machine, so what is it for? Making 'prototypes'? Maybe, but if it is a business, you would spend the majority of your time fiddling with this machine and still get a marginal output - no ball screws, no rigid tapping, extremely slow. As a toy, who has $3500 to throw away on a toy that has very little functional purpose? Not many.
Far too weak to help any business (don't forget your time spent).
Far too expensive to be successful in the toy market.
I have lived this tale. Designer that wanted to bring prototype and light production in-house. I ended up spending every dime I had, and became a machinist - not a designer. Now I have gotten rid of my shop and back to designing. Outsourcing all the CNC work and making a far better business and lifestyle. Took 10 years to learn that lesson. I did, however, become a far better mechanical engineer after spending so much time programming, setting up, and running the CNC shop. I can design around the problems and challenges of CNC machined parts.