90 gallon co2

It will be hard to stay under $100 for a complete CO2 system, with the CO2 tank included. If you keep an eye on Craigslist you can probably do it. I checked just now and found one CO2 regulator listed there for $75, which isn't a good price, but I suspect you can bargain that down to $50, if not lower. Then, the place you find to refill your CO2 tank may have CO2 tanks to sell, for under $50 filled, for a 5 pound tank.

o i forgot to mention i have a 10 pound co2 tank so that is not added in the cost. is there any brand or anything to look for in one or are they all pretty much the same?

I just bought a millwaukee regulator and monitor for a hundy on here a week ago. Just need a tank now. I am sure you can do a rental program on co2 tanks through your airgas suppliers. So just keep ur eyes open on here.