validate.php static public function isPrice($price) error

[Rubin]

The price validation in validate.php
static public function isPrice($price){} has a big error in Version 1.0.0.8. It is pretty working when the price is in dot (.) format (123.12). The price is not validated when it's in 123,12 (european format). Is it the bug or what. I got this error while confirming the last step in bankwire payment. I have Taxes applied.

static public function isPrice($price)
{
  return ereg('^[0-9]{1,10}(\.[0-9]{1,9})?$', $price);
}

Anyone, please tell me is it a bug of this funtion or I've misconfiguration something from admin.