Search:

See these threads:

http://forums.appthemes.com/need-show-contact-tab-first-not-map-25689/

http://forums.appthemes.com/collecting-email-addresses-adding-bcc-email-enquiries-14451/

You need to create a new custom filed, name it Price.

Then add this custom filed to your form layout. It will appear on your add, beside other costume fields.

ClassiPress>Custom Fields > Create...