Solid concept for a demo and mechanics worked well. I liked the premise a lot. Layout was a little odd. I also liked the brick background. It was a bit hard to identify what was on the assembly line though. I also had trouble seeing much of an increase in benefit from buying the shipment, especially considering the price. Speaking of prices, maybe having more items with prices in between might be good so meeting them doesn't seem like so much of a jump?
Took me a while to expand the company, but I did get some enjoyment out of this!