fix: use organization default fixedPrice if self-serve/default price is passed in (#15966)

* Use fixed price if default (selfserve) is used

* fix conditional

* use .env instead of hard coded values

* feedback

.env.example

@@ -259,6 +259,8 @@ NEXT_PUBLIC_AVAILABILITY_SCHEDULE_INTERVAL=
 # This variable should only be set to 1 or true if you are in a non-prod environment and you want to
 # use organizations
 ORGANIZATIONS_ENABLED=
+NEXT_PUBLIC_ORGANIZATIONS_MIN_SELF_SERVE_SEATS=30
+NEXT_PUBLIC_ORGANIZATIONS_SELF_SERVE_PRICE=3700 # $37.00 per seat
 
 # This variable should only be set to 1 or true if you want to autolink external provider sing-ups with
 # existing organizations based on email domain address