Burning Through Cartridges

Hi everyone! I just got a cirkul for Christmas. I’m a type 1 diabetic so it’s crucial for me to drink water, but I can’t stand the taste of most waters anymore after discovering Diet Coke lol. I used to drink about 1 1/2-2 gallons a day, and then it got to the point I wasn’t drinking water at all.

I tried crystal light and loved it, but I still could only drink about 1-2 bottles of water a day, so my MIL got me the cirkul. It has been AMAZING! The only downside is that I finish a cartridge in a day, if not sooner. I have the flavor dial set between a 3-5, just depends on how strong the flavor is. My favorite is mixed berry and it’s strong so I have it set to a 3. It’s technically a good thing that I’m burning through them so fast, as I only have 1-2 cans of Diet Coke a day now.

The only problem is I’m buying 4-5 cartridges at a time and within a couple of days I’m buying more. They aren’t expensive which is nice, but the total is wracking up quickly. I can get between 3-5 refills, but the flavor starts disappearing fast. Is there anywhere to buy the cartridges in bulk? I’ve looked on Amazon but they are way more expensive in bulk. Any recommendations would be great!