I got 9 successful transaction but I can see only 2 in google analytics. I do redirect to https while I get payment that I doubt about it may cause but not really sure while e-commerce tracking doesn't work properly.
UPDATE:
var pageTracker = _gat._getTracker('UA-1234567890');
pageTracker._trackPageview();
pageTracker._addTrans('254','','217,4550','','0','Istanbul','','Turkey');
pageTracker._addItem('254','203','AAA - BBB','','169,00','1');
pageTracker._addItem('254','167','XXX - YYY','','59,90','1');
pageTracker._trackTrans();