Thanks for the feedback!
You're playing version 2 which had a difficulty balance patch, perhaps I've made it a bit too hard, my bad.
If you stick to placing 3 regular belts the first ball reaches the end just in time (you'd only have 5 money).
I'll make the tutorial (first 3 products) easier in version 3, which I should be able to release in a few minutes, hopefully you'll have a better time then :)
EDIT: version 3 is out, please give it another try and please let me know if you still run into issues