I found a 5lb CO2 tank plus regulator for $70 on craigslist today! Tank needed to be hydrotested ($20) and filled ($18), so $108 all said and done.
This is the regulator
- says it's $150 retail!
Here's the regulator:
The guy also gave me a huge decorative lava rock, a small specimen tank, a pair of aquatongs, a CO2 drop checker, and some other misc. stuff. I'm pretty stoked
Some of the other stuff: