This is an interesting game! I thought the main mechanic was great, and an easy to learn system. I found the process of beating and joining the pipes very satisfying. I also liked the vibes of the interactions and marketplace, and it was fun to see and adapt to a shifting pricing chart.
Though I think it should be much clearer I'm meant to talk to Grey at the start, as I went around every cart before seeing whether I could talk to them. I also found the selling price of the marketplace to be inaccurate. I consistently ended up getting less money than was stated. Lastly, I felt that the game's pacing was way too slow, and waiting for minorly better prices in the marketplace only to make such little progress was not fun.
Overall, a good idea with interesting mechanics.