The bad news is, that there really is not a price diffrence based on pin configuartion.
Eric got me set up with new bulbs the last time I needed them. Check out his store here: http://www.myreefshop.com/xcart/catalog/ If he does not have what you are looking for listed, email him, he can probable get it.
Robert
Looks like he has left the country for a few weeks.