MPU-9150, MPU-6050 distributors

Hi All,

I hope this isn't too off-topic. I am developing a product based on the above sensors. I am currently using the EVAL boards I ordered from Invensese, which are fine for the time being. However I am not really sure where to source the chips in bulk (say 1000 units for start). I have tried various sources like alibaba, the prices are around $15 for MPU-9150 and I saw MPU-6050 for about $5 on ebay. I was hoping to get the MPU-9150 for around $3-$5 though. Any ideas where to go? Are there official resellers? Also is there some king of recommended price?

many thanks

Miso