Question concerning post template

Hello, I´d like to realize the following steps:

1. A site visitor should became the possibility to send an price information via a form (Plugin e.g. User Submitted Posts)
2. These information should be mapped to the defined custom field from this plugin
3. The custom field “price” should be displayed by default on the right place in a post template

Is this possible? What I already have:
– User can send the information via the plugin User Submitted Posts
– a new post will be created automatically

Needed further steps:
– text field element from the form should be mapped to the custom field
– the content of this custom field should be display automatically in the post. Is there a possibility to create a post template, which will be inserted automatically in a post incl. variables for the custom field?

Thanks and best regards
Hugo