There is no way to judge whether the income is increasing or decreasing. Even if you know 2700, no one will buy it. You can only make sure that the price of this thing is below 2700 to make a profit.

Think about it, the intersection of supply and demand lines is the market equilibrium point, and you get the highest income at this intersection. You are selling 1800 now. You know someone is buying it, but you don't know whether your current price is higher or lower than the equilibrium price or the market equilibrium price. Classified discussion

1. If you are above the equilibrium price, your income will decrease if you upgrade to 2000.

If you are promoted to 2000 at a balanced price, your income will increase.

If the price is balanced, your income will be reduced if you upgrade to 2000.

You are not completely competitive, and you have certain ability to influence the market price. Of course, I'm not talking about perfect competition. If it is, you can't affect the market price, which means that if you raise the price, your things won't sell.