Numbers in the spreadsheet aren't really hard to understand. However, the time invested fpr creating it is appreciated. As you said, I disagree with the time factor, I believe it takes much, MUCH mess. Responding to the suggestions:
1. It has been suggested already, and is being worked on. I hope it works like neopets auctions.
2. I prefer for it to just be coded. I strongly believe that the market will re-balance itself, probably producing a lower range of varying prices.
3. Kind of like pokémon go? I completely disagree with this one, it would limit the economy completely, disbanding it from being a real free market.