translate suffix of CCK field

Sorry, this site did not respond correctly and I accidentally posted this issue 3 times.

Workaround: I used a computed field and CSS to simulate a suffix.
I have a decimal CCK field called price. I wanted to add "incl. VAT" as suffix that should be translatable.
When the field is empty, the computed field is not shown.

This is the php code of the computed field:

if (isset($node->field_price[0]['value']))
{$node_field[0]['value'] = t("incl. VAT");};

With CSS I positioned the computed behind the CCK field:

.field-field-price {
	float: left;
	padding-right: 7px;
}

UPDATE
I have noticed that sometimes the wrong translation is shown. This is a caching issue.
So I changed my computed field:

if ($node->language == "en")
{$node_field[0]['value'] = "incl. VAT";}

if ($node->language == "fr")
{$node_field[0]['value'] = "TTC";}

if ($node->language == "nl")
{$node_field[0]['value'] = "incl. BTW";}
;

I put that code in my computed field. Computed field is a cck module:
http://drupal.org/project/computed_field