Conga Solution : Need to update the field dynamically in the conga email template

I had a "Reserve field" in the salesforce Object , So when the field is not filled , Instead of showing Blank in the email template , need to show "TBD" .  Need to satisfy two conditions. 1) it should show "TBD" if  the Checkbox "No Reserve" or "Reserve price"  is not selected 2) It should show the amount if "Reserve Price" is selected.  I had this condition. Can someone fix this formula which should be put in the template.

IF( No_Reserve__c || Reserve_Price__c > 0
, IF(No_Reserve__c ,'NO RESERVE', TEXT(Reserve_Price__c))
, 'TBD')