Selling sodastream cylinder exchange or refills

If ad is up, this is available.
I am located off Bayview & Davisville in Toronto

For 10 dollars, I will replace your empty cylinder with another full of co2.

1. We can do a bottle exchange. You leave me your empty bottle and I give you a full one.
2. You can leave your own bottle with me and pick up the next day.
3. You can bring me a cold/frozen bottle for me to refill while you wait (2-5 mins).

No, I do not sell cylinders. I will need your empty bottle in exchange.

Empty bottles must be in excellent shape.

If ad is up, this is available.
I am located off Bayview & Davisville in Toronto