I really liked the idea! It is a creative approach to the original theme
Some criticism:
- Text size should be bigger
- You should make the game auto-adjust its viewport size so that it can be played in any size. Since you are using Godot, you can just set your Window Stretch Mode to 2D and Aspect to Keep (Settings->Window->Stretch)
- You could add some dialogue SFX (at least two-three neutral, one agreeing, one disapproving)
- You should add a tip on how to advance in a dialogue (i.e. pressing Enter). I sat for a while on my first dialogue line, waiting for the dialogue to advance automatically
But overall, this game was a nice surprise! Having some experience myself of going from house to house, trying to sell something, I could relate to the game.
Good job!