Just a small update on this: seeing as reception has been very positive so far, it's clear there's quite an amount of people that enjoy this kind of game. So that means the experiment is a success, and I will definitely build on this game.
Like I mentioned earlier, there is quite a bit of content I want to include. I also want to improve on the existing systems, like implementing haggling instead of "blind" price guessing.
I consider the current version a "full experience", so when I do implement some of these bigger features that change the game quite a bit, I will release that as a 2.0 release :)