I appreciate your concern, but I did run a spreadsheet on this project.
The price per deck is $2.16, not $3.00, so the print cost is $6,250 including all setup fees.
$7,500 is reduced to $6,900 after Amazon and KS cuts, and I estimate $650 for shipping at a minimum funding level.
You are absolutely correct: there is no profit at all at $7,500 and I work for free.
Practically speaking, with all the work required for fulfillment, one works for free until the $10K level.
Shipping the number of packages at the minimum level does not require the fulfillment center, I've done that before.
It's a lot of work, true, but it's manageable.
This is my first deck on KS, so I don't mind going through the learning experience.
I fulfilled all orders on another KS project, which involved a very complicated engineering in China with many prototypes.
I run a large pre-press operation earlier in my life, so I'm extremely confident in handling any print issues.
Your point is still valid: until we hit $12K or so it's a huge amount of work without any pay.