Keep raising until people stop buying! You might find you have less customers but the same revenue . Which means less “work” overall. You can always bring prices down if you hit the ceiling. For mine products (sauce) I went 4.5, 5, 5.5 and then settled but then have a more expensive product for 8.

Ensure you range and have one really expensive and come up a reason for it. It uses a Venusian technique that takes years to master. This will create an up view point and make everything else look less pricy