u/Tanuki55

I recently wanted to get into making my own sparkling water, but didn't want to buy a soadstream. I saw a facebook listing for a good CO2 tank that I'm going to buy later this week. Now, I'm trying to find anyone to fill the dam thing. Linde is charging 75$ and Airgas is charging 50$.

Thats almost the price of the tank I'm buying. I feel like I'm missing something obvious.