To each their own, but the debate over glycol and rv antifreeze is really a non issue for me. If you read my comment that got this thread going today, I advised that I was considering legit PG anyways. Not because I’m afraid of death, or an upset stomache, but because it may be a more stable mix in my cooler. Maybe not.
With that being said, the savings is much greater than $25. With the bulky cooler, and the way the coils are, I think I have about 10 gallons in there. Even if I went 3 to 1, I’m looking at near $100 in glycol compared to maybe $10 in RV antifreeze. It’s not a matter of being cheap, your right, if I wanted to save money I would quit brewing. I’m using an SS Unitank and a spike kettle, I’m doing this for fun, not to save money. However, I will reasonably cut cost where I can for something like that.