[RESOLVED] Why a $0 booking - When there is a price configured?

When booking a service it shows $0 even when the service price set to $0.00?
I am logged in as a super user which is not part of the Special User Group in the coupon settings.

Why is it still charging $0?

Thanks

I am not sure with your idea, if the service cost is zero ($0.00) , at frontend, it will show zero ($0.00) too
Dam

Service price is $150 at back end and showing as $0 at front end.

SOLVED.

For others who may have the same problem. The reason this happened for me is that I didn't understand the UI in Manage Services Edit.
The Price Adjustment table's 2nd column in edit (manage services) is confusing. It looks like all the prices are $150. I didn't notice that the column is disabled because I didn't check on it. You you must actively check all the boxes. In other words, the "default" in Manage Services is not really the default until you check those boxes. Unchecked the actual default is Zero.

Images attached.