Visitors on your site will have an efficient system to estimate the expenses before even taking services from you. They can select the categories of the services and click on check-boxes of available items to measure their costs. Your total expenses for the services you selected in the respective category will be displayed instantly.

Treatments, Investigations and Services Cost Estimate & Prices are based on  Department(s) settings (Department: Edit Item). Put there only raw digits.
In component Options there is the general settings area where you can set used currency (Dollar, Euro, Pound, Real, Ruble etc.).