OMG
An old friend of mine is a VP at Airgas in Calif, he called on my behalf and they'll give me the 160 litres of LN2 for $62.50, which is a lot cheaper than they quoted me before I got the "friends and family" discount
So rental of 45/mo and deliver of 25 bucks gets to over $100 - so it'll only be worth it if one refill lasts several months.. which prolly won't be the case
