so......you'd essentially be buying a kit to grow seaweed in your home? And the only thing noticeable it does is act like an air freshener? Looks like maybe you can use the seaweed as food or ingredients once its grown?
Ive never been to Santa Monica, but I can only assume it smells like my Florida Beach. I dont see it very marketable to coastal areas, and the inland states, if you've never been to a beach, you don't know what it smells like. So in my mind, you wouldn't buy it, unless there was a way to smell it before hand, kinda like a scratch n sniff sticker.
I would focus more on the health benefits of seaweed than the smell. I personally don't notice the smell of the beach anymore, and it reads like thats the main reason to buy one. A fancy air freshener. I don't think the air cleaning benefits would be significant enough for anyone to notice, unless maybe you had a kiddie pool filled with it. Again, lots of health nuts out there, and id think far more than people that want a beach air freshner.
Just my thoughts on it coming from a coastal state. best of luck to you