Pretty simple concept.
The more floors you have completed before you reach Basil at the next clockwork terminal the lower the prices for recipes.
"So why is this needed?" you may ask.
1. Detour people from simply hoping into parties that reach Basil and don't do anything to help. These people disgust me as they simply use others for easy profit.
2. To make it more rewarding to do longer runs.
3. Make it more possible to make a profit from recipes from that are sold from HoH.
Now for the list for floor to price ration: