How to add prefix (label) and postfix to commerce price field I am trying to implement Drupal Commerce in an existing site with existing nodes. In this process I need to replace the existing price field with the commerce price field. Since this field is locked, I cannot change the label. 

So I thought I could use the raw price format and just add a prefix as a label in template.php or possibly in a hook in *.tpl.php file. But after spending hours googling without finding how to do this, I give up and post this question here. Anybody got an idea?
I'm not 100% that I understand your question correctly but I assume you need to add prefix &amp; suffix to your commerce product prices. In that case, Drupal Commerce Extra Price Formatters does exactly that, have you tried using this module?