average price to refill a nitrous bottle ?

Where I live, nitrous is $4 a pound....I just had my bottle filled today, they put 11lbs into it and charged me $44. I wasn't thrilled about the extra lb in my 10lb bottle, but oh well.

From what my friends down south tell me, nitrous down there is about half the price that it is up here.

The Zex kit rocks, you will love it!
 
:OT: sorry for this guy's but have any of you run into any issue's running NOS with the stock bottom end with the stock hyperstetic piston's? If so what shot where you running and what did you do wrong to cause it? BTW what happened? peace



john :p