The fact that it's been running for 5+ years seems to suggest otherwise, mate.
But people are paying it.
I never said they were not. All I said was that in the long term, it will only be as viable as long as people are willing to pay that cost. If his onions are truly better than the onions you get in your local supermarket, then it will continue to be viable.
it will only be as viable as long as people are willing to pay that cost
Can you think of any example where this is not true?