I need to scare up a bottle of argon for my PP256, on order. Last time I did this I paid about $150 deposit for a 20 cu ft bottle of AR/CO2 and after that, $35 for refills. Local dealer is Praxair and I'm concerned because they don't publish their prices and every time I go in there to refill I can see the Dude behind the counter sizing me up. Feel like there's a multi-tier pricing structure and I always come out on the short end, despite showing up in an old pickup wearing dirty Levis and sweaty t-shirt. Any thoughts as to what is a fair price for cylinder deposit? Southern Kali-fornia. Orange County, to be specific.