Where should I refill the AdBlue?

[ope126]

My car AdBlue reminding only 6000kms left while I drove about 6600kms, so I need the refill AdBlue before my first service( 15000km service), should I buy the 10L AdBlue bottle from gas stations ( about $40 each) or go back to dealer for refill? How much will cost to refill from VW dealer place?
Any advice will be appreciated.

7times, check out my thread regarding the DPF and AdBlue; RE: 140TDI DPF with Adblue
If you read to the end, you will see the specifics regarding my experiences with AdBlue.

Just remember the reset when add the AdBlue...