Not sure if this can be stikyed, or merged into "race gas" thread, but we should get nitrous fillup shops,

shop name and location:
filling method (nano/air-compressed/bottle freezing):
price:
shop phone number:
shop website:

(add more if aplicable)

 

1-800-99-refill

or

http://www.holley.com/dealers/NOSDealerLocator.asp

 

I know Action Auto in Lynnwood does it. Dunno their method etc, but that's the place my friend usually goes.