Good place to purchase blank BD-R's?

[markw]

With prices of Blu-Ray Burners falling for PC's I may get one soon. I'm looking at one of the models that's approximately $250 and plan to put it in an external case so I can connect it to any of my computers via USB.
The problem is the blanks. I would mostly use BD-R, not BD-RE and probably mostly 25GB, not 50GB.
I have looked at Meritline and SuperMediaStore. I would be willing to buy a case of approximately 20-30 blanks, maybe even 50 if the price is right but about the cheapest I have found is $3.59 each. I also don't know which brands are best to choose. Does anyone know of a place to get quality BD-R's at a price lower than this?