2.0.3e: Get rid of "0€ price" in confirmation email?

[freeme]

Joomla 2.5.3
VM 2.0.3.e

Hi,
in the confirmation eMail there is a stroke though price of 0€ shown. I dont know why and I want to get rid of it, but dont know how. In CONFIGURATION/PRICING, there is only one box ticked (show final sales price), all others are not ticket.

Please see screenshots. How can I get rid of the stroke through 0€ price?



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