Parts about how price affects Score needs update because it does not correct after this code update 2 month ago:
-priceExponentiation = 4
+priceExponentiation = 5
Those parts are incorrect:
Every time you cut your price in half, your score will go up by 16x.
If you cut your total cost in half, your score will go up by 16x.
The price penalty only really becomes relevant if your collateral is more than 5x your total cost. Generally speaking you want to target 2-3x collateral vs. price.
That is, every time you double your collateral, your score doubles as well. 3.9% of your collateral contributes to the total price, which has a 16x multiplier on it when you double the total price. So if doubling your collateral is enough to move the total price by more than about 20%, it'll actually cause your score to drop instead of increase