Walked into a shop where this guy has these tanks for $50 small and $75 large. He'll fill them for $10 but his compressor was down. What i really need to know is what's the best price I can get on a yoke for one. He wants $100 and it looks nice but I'm kind of broke right now and just want to fill up my discovery. I've seen some for around $40 but just not sure what I'm looking for think the one was on a google search at walmart. What exactly I'm I looking for and any deals or links from you guys. I have a yoke for a co2 cylinder that threads on there but he says it won't work. Thanks